MESON Chess Problem Database
Problem Display
PID: 151476 (2Q2n2/3r1NN1/2b2n2/R3pp2/5kp1/3P2R1/7P/K7 w - - 0 1)
Rothstein, Louis
Good Companions (November), 1914
#2
8 + 8
SOLUTION
- SOUND
- Sets
- 1...Rxd3
- 2.Qxf5#
- 1...Rd4
- 2.Qxf5#
- 1...Rd5
- 2.Qxf5#
- 1...Rd6
- 2.Qxf5#
- 1...Ra7
- 2.Qxf5#
- 1...Rb7
- 2.Qxf5#
- 1...Rc7
- 2.Qxf5#
- 1...Re7
- 2.Qxf5#
- 1...Rxf7
- 2.Qxf5#
- 1...Rd8
- 2.Qxf5#
- 1...Bh1
- 2.Qc1#
- 1...Bg2
- 2.Qc1#
- 1...Bf3
- 2.Qc1#
- 1...Ba4
- 2.Qc1#
- 1...Be4
- 2.Qc1#
- 1...Bb5
- 2.Qc1#
- 1...Bd5
- 2.Qc1#
- 1...Bb7
- 2.Qc1#
- 1...Ba8
- 2.Qc1#
- 1...Se4
- 2.Sh5#
- 1...Sd5
- 2.Sh5#
- 1...Sh5
- 2.Sxh5#
- 1...S6h7
- 2.Sh5#
- 1...Se8
- 2.Sh5#
- 1...Sg8
- 2.Sh5#
- 1...Se6
- 2.Sxe6#
- 1...Sg6
- 2.Se6#
- 1...S8h7
- 2.Se6#
- 1...e4
- 2.Rxf5#
- 1...Rxd3
- Tries
- 1.Kb1?
- 1...Rxd3
- 2.Qxf5#
- 1...Rxf7
- 2.Qxf5#
- 1...Bf3
- 2.Qc1#
- 1...Rd4
- 2.Qxf5#
- 1...Rd5
- 2.Qxf5#
- 1...Rd6
- 2.Qxf5#
- 1...Ra7
- 2.Qxf5#
- 1...Rc7
- 2.Qxf5#
- 1...Re7
- 2.Qxf5#
- 1...Rd8
- 2.Qxf5#
- 1...Bh1
- 2.Qc1#
- 1...Bg2
- 2.Qc1#
- 1...Ba4
- 2.Qc1#
- 1...Be4
- 2.Qc1#
- 1...Bb5
- 2.Qc1#
- 1...Bd5
- 2.Qc1#
- 1...Bb7
- 2.Qc1#
- 1...Ba8
- 2.Qc1#
- 1...Se4
- 2.Sh5#
- 1...Sd5
- 2.Sh5#
- 1...Sh5
- 2.Sxh5#
- 1...S6h7
- 2.Sh5#
- 1...Se8
- 2.Sh5#
- 1...Sg8
- 2.Sh5#
- 1...Se6
- 2.Sxe6#
- 1...Sg6
- 2.Se6#
- 1...S8h7
- 2.Se6#
- 1...e4
- 2.Rxf5#
- 1...Rb7+!
- 1...Rxd3
- 1.Ka2?
- 1...Rxd3
- 2.Qxf5#
- 1...Rxf7
- 2.Qxf5#
- 1...Bf3
- 2.Qc1#
- 1...Rd4
- 2.Qxf5#
- 1...Rd5
- 2.Qxf5#
- 1...Rd6
- 2.Qxf5#
- 1...Ra7
- 2.Qxf5#
- 1...Rb7
- 2.Qxf5#
- 1...Rc7
- 2.Qxf5#
- 1...Re7
- 2.Qxf5#
- 1...Rd8
- 2.Qxf5#
- 1...Bh1
- 2.Qc1#
- 1...Bg2
- 2.Qc1#
- 1...Ba4
- 2.Qc1#
- 1...Be4
- 2.Qc1#
- 1...Bb5
- 2.Qc1#
- 1...Bb7
- 2.Qc1#
- 1...Ba8
- 2.Qc1#
- 1...Se4
- 2.Sh5#
- 1...Sd5
- 2.Sh5#
- 1...Sh5
- 2.Sxh5#
- 1...S6h7
- 2.Sh5#
- 1...Se8
- 2.Sh5#
- 1...Sg8
- 2.Sh5#
- 1...Se6
- 2.Sxe6#
- 1...Sg6
- 2.Se6#
- 1...S8h7
- 2.Se6#
- 1...e4
- 2.Rxf5#
- 1...Bd5+!
- 1...Rxd3
- 1.Kb2?
- 1...Rxd3
- 2.Qxf5#
- 1...Rxf7
- 2.Qxf5#
- 1...Bf3
- 2.Qc1#
- 1...Rd4
- 2.Qxf5#
- 1...Rd5
- 2.Qxf5#
- 1...Rd6
- 2.Qxf5#
- 1...Ra7
- 2.Qxf5#
- 1...Rc7
- 2.Qxf5#
- 1...Re7
- 2.Qxf5#
- 1...Rd8
- 2.Qxf5#
- 1...Bh1
- 2.Qc1#
- 1...Bg2
- 2.Qc1#
- 1...Ba4
- 2.Qc1#
- 1...Be4
- 2.Qc1#
- 1...Bb5
- 2.Qc1#
- 1...Bd5
- 2.Qc1#
- 1...Bb7
- 2.Qc1#
- 1...Ba8
- 2.Qc1#
- 1...Se4
- 2.Sh5#
- 1...Sd5
- 2.Sh5#
- 1...Sh5
- 2.Sxh5#
- 1...S6h7
- 2.Sh5#
- 1...Se8
- 2.Sh5#
- 1...Sg8
- 2.Sh5#
- 1...Se6
- 2.Sxe6#
- 1...Sg6
- 2.Se6#
- 1...S8h7
- 2.Se6#
- 1...e4
- 2.Rxf5#
- 1...Rb7+!
- 1...Rxd3
- 1.Ra3?
- 1...Rxd3
- 2.Qxf5#
- 1...Rxf7
- 2.Qxf5#
- 1...Bf3
- 2.Qc1#
- 1...Se4
- 2.Sh5#
- 1...Rd4
- 2.Qxf5#
- 1...Rd5
- 2.Qxf5#
- 1...Rd6
- 2.Qxf5#
- 1...Ra7
- 2.Qxf5#
- 1...Rb7
- 2.Qxf5#
- 1...Rc7
- 2.Qxf5#
- 1...Re7
- 2.Qxf5#
- 1...Rd8
- 2.Qxf5#
- 1...Bh1
- 2.Qc1#
- 1...Bg2
- 2.Qc1#
- 1...Ba4
- 2.Qc1#
- 1...Be4
- 2.Qc1#
- 1...Bb5
- 2.Qc1#
- 1...Bd5
- 2.Qc1#
- 1...Bb7
- 2.Qc1#
- 1...Ba8
- 2.Qc1#
- 1...Sd5
- 2.Sh5#
- 1...Sh5
- 2.Sxh5#
- 1...S6h7
- 2.Sh5#
- 1...Se8
- 2.Sh5#
- 1...Sg8
- 2.Sh5#
- 1...Se6
- 2.Sxe6#
- 1...Sg6
- 2.Se6#
- 1...S8h7
- 2.Se6#
- 1...e4!
- 1...Rxd3
- 1.Ra4+?
- 1...Rd4
- 2.Qxf5#
- 1...Bxa4
- 2.Qc1#
- 1...Be4
- 2.Qc1#
- 1...Se4
- 2.Sh5#
- 1...e4!
- 1...Rd4
- 1.Rb5?
- 1...Rxd3
- 2.Qxf5#
- 1...Rxf7
- 2.Qxf5#
- 1...Bxb5
- 2.Qc1#
- 1...Bf3
- 2.Qc1#
- 1...Se4
- 2.Sh5#
- 1...Rd4
- 2.Qxf5#
- 1...Rd5
- 2.Qxf5#
- 1...Rd6
- 2.Qxf5#
- 1...Rb7
- 2.Qxf5#
- 1...Rc7
- 2.Qxf5#
- 1...Re7
- 2.Qxf5#
- 1...Rd8
- 2.Qxf5#
- 1...Bh1
- 2.Qc1#
- 1...Bg2
- 2.Qc1#
- 1...Be4
- 2.Qc1#
- 1...Bd5
- 2.Qc1#
- 1...Bb7
- 2.Qc1#
- 1...Ba8
- 2.Qc1#
- 1...Sd5
- 2.Sh5#
- 1...Sh5
- 2.Sxh5#
- 1...S6h7
- 2.Sh5#
- 1...Se8
- 2.Sh5#
- 1...Sg8
- 2.Sh5#
- 1...Se6
- 2.Sxe6#
- 1...Sg6
- 2.Se6#
- 1...S8h7
- 2.Se6#
- 1...e4
- 2.Rxf5#
- 1...Ra7+!
- 1...Rxd3
- 1.Rd5?
- 1...Rxd5
- 2.Qxf5#
- 1...Rxf7
- 2.Qxf5#
- 1...Bxd5
- 2.Qc1#
- 1...Sxd5
- 2.Sh5#
- 1...Se4
- 2.Sh5#
- 1...Rd6
- 2.Qxf5#
- 1...Rb7
- 2.Qxf5#
- 1...Rc7
- 2.Qxf5#
- 1...Re7
- 2.Qxf5#
- 1...Rd8
- 2.Qxf5#
- 1...Ba4
- 2.Qc1#
- 1...Bb5
- 2.Qc1#
- 1...Bb7
- 2.Qc1#
- 1...Ba8
- 2.Qc1#
- 1...Sh5
- 2.Sxh5#
- 1...S6h7
- 2.Sh5#
- 1...Se8
- 2.Sh5#
- 1...Sg8
- 2.Sh5#
- 1...Se6
- 2.Sxe6#
- 1...Sg6
- 2.Se6#
- 1...S8h7
- 2.Se6#
- 1...e4
- 2.Rxf5#
- 1...Ra7+!
- 1...Rxd5
- 1.Rxe5?
- threat
- 2.Rxf5#
- 1...Rxd3
- 2.Qxf5#
- 1...Rd5
- 2.Qxf5#
- 1...Bf3
- 2.Qc1#
- 1...Be4
- 2.Qc1#
- 1...Ra7+!
- threat
- 1.Ra6?
- 1...Rxd3
- 2.Qxf5#
- 1...Rxf7
- 2.Qxf5#
- 1...Bf3
- 2.Qc1#
- 1...Se4
- 2.Sh5#
- 1...Rd4
- 2.Qxf5#
- 1...Rd5
- 2.Qxf5#
- 1...Rd6
- 2.Qxf5#
- 1...Ra7
- 2.Qxf5#
- 1...Rb7
- 2.Qxf5#
- 1...Rc7
- 2.Qxf5#
- 1...Re7
- 2.Qxf5#
- 1...Rd8
- 2.Qxf5#
- 1...Bh1
- 2.Qc1#
- 1...Bg2
- 2.Qc1#
- 1...Ba4
- 2.Qc1#
- 1...Be4
- 2.Qc1#
- 1...Bb5
- 2.Qc1#
- 1...Bd5
- 2.Qc1#
- 1...Bb7
- 2.Qc1#
- 1...Ba8
- 2.Qc1#
- 1...Sd5
- 2.Sh5#
- 1...Sh5
- 2.Sxh5#
- 1...S6h7
- 2.Sh5#
- 1...Se8
- 2.Sh5#
- 1...Sg8
- 2.Sh5#
- 1...Se6
- 2.Sxe6#
- 1...Sg6
- 2.Se6#
- 1...S8h7
- 2.Se6#
- 1...e4!
- 1...Rxd3
- 1.Kb1?
- Keys
- 1.Ra2!
- 1...Rxd3
- 2.Qxf5#
- 1...Rxf7
- 2.Qxf5#
- 1...Bf3
- 2.Qc1#
- 1...Se4
- 2.Sh5#
- 1...Rd4
- 2.Qxf5#
- 1...Rd5
- 2.Rf2#
- 2.Qxf5#
- 1...Rd6
- 2.Qxf5#
- 1...Ra7
- 2.Qxf5#
- 1...Rb7
- 2.Qxf5#
- 1...Rc7
- 2.Qxf5#
- 1...Re7
- 2.Qxf5#
- 1...Rd8
- 2.Qxf5#
- 1...Bh1
- 2.Qc1#
- 1...Bg2
- 2.Qc1#
- 1...Ba4
- 2.Rf2#
- 2.Qc1#
- 1...Be4
- 2.Qc1#
- 1...Bb5
- 2.Rf2#
- 2.Qc1#
- 1...Bd5
- 2.Qc1#
- 1...Bb7
- 2.Qc1#
- 1...Ba8
- 2.Qc1#
- 1...Sd5
- 2.Sh5#
- 2.Rf2#
- 1...Sh5
- 2.Sxh5#
- 1...S6h7
- 2.Sh5#
- 1...Se8
- 2.Sh5#
- 1...Sg8
- 2.Sh5#
- 1...Se6
- 2.Sxe6#
- 1...Sg6
- 2.Se6#
- 1...S8h7
- 2.Se6#
- 1...e4
- 2.Rf2#
- 1...Rxd3
- 1.Ra2!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 1
- ADDED MATES = 0
- REMOVED MATES = 4
- Sets
- R(g);OGATE,XP(C)::QAR1(H),XP(d)
- R(g);OGATE::QAR1(H),XP(d)
- R(g);OGATE,P_PINR(E)::QAR1(H),XP(d)
- R(g);OGATE,XS(F)::QAR1(H),XP(d)
- B(e);OGATE::QAB(H)
- S(f);N_GUARD::S(G)
- S(f);N_GUARD::S(G),XS(f)
- S(h);N_GUARD::S(G),XS(h)
- S(h);N_GUARD::S(G)
- P(c);OGATE::R1(E),XP(d)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- R(g);OGATE,XP(C)::QAR1(H),XP(d)
- R(g);OGATE,XS(F)::QAR1(H),XP(d)
- B(e);OGATE::QAB(H)
- R(g);OGATE::QAR1(H),XP(d)
- B(e);OGATE,P_PINP(C)::QAB(H)
- S(f);N_GUARD::S(G)
- S(f);N_GUARD::S(G),XS(f)
- S(h);N_GUARD::S(G),XS(h)
- S(h);N_GUARD::S(G)
- P(c);OGATE::R1(E),XP(d)
- Refutation
- R(g);CHECK
- Try
- K(A);P-FLIGHT
- Vars
- R(g);OGATE,XP(C)::QAR1(H),XP(d)
- R(g);OGATE,XS(F)::QAR1(H),XP(d)
- B(e);OGATE::QAB(H)
- R(g);OGATE::QAR1(H),XP(d)
- R(g);OGATE,P_PINR(E)::QAR1(H),XP(d)
- S(f);N_GUARD::S(G)
- S(f);N_GUARD::S(G),XS(f)
- S(h);N_GUARD::S(G),XS(h)
- S(h);N_GUARD::S(G)
- P(c);OGATE::R1(E),XP(d)
- Refutation
- B(e);CHECK
- Try
- K(A);S_FLIGHT
- Vars
- R(g);OGATE,XP(C)::QAR1(H),XP(d)
- R(g);OGATE,XS(F)::QAR1(H),XP(d)
- B(e);OGATE::QAB(H)
- R(g);OGATE::QAR1(H),XP(d)
- S(f);N_GUARD::S(G)
- S(f);N_GUARD::S(G),XS(f)
- S(h);N_GUARD::S(G),XS(h)
- S(h);N_GUARD::S(G)
- P(c);OGATE::R1(E),XP(d)
- Refutation
- R(g);CHECK
- Try
- R(E);
- Vars
- R(g);OGATE,XP(C)::QAR1(H),XP(d)
- R(g);OGATE,XS(F)::QAR1(H),XP(d)
- B(e);OGATE::QAB(H)
- S(f);N_GUARD::S(G)
- R(g);OGATE::QAR1(H),XP(d)
- R(g);OGATE,P_PINR(E)::QAR1(H),XP(d)
- S(f);N_GUARD::S(G),XS(f)
- S(h);N_GUARD::S(G),XS(h)
- S(h);N_GUARD::S(G)
- Refutation
- P(c);
- Try
- R(E);CHECK
- Vars
- R(g);OGATE,P_SPINR(g)::QAR1(H),XP(d)
- B(e);OGATE,XR(E)::QAB(H)
- B(e);OGATE,P_SPINB(e)::QAB(H)
- S(f);P_SPINS(f)::S(G)
- Refutation
- P(c);P_SPINP(c)
- Try
- R(E);
- Vars
- R(g);OGATE,XP(C)::QAR1(H),XP(d)
- R(g);OGATE,XS(F)::QAR1(H),XP(d)
- B(e);OGATE,XR(E)::QAB(H)
- B(e);OGATE::QAB(H)
- S(f);N_GUARD::S(G)
- R(g);OGATE::QAR1(H),XP(d)
- S(f);N_GUARD::S(G),XS(f)
- S(h);N_GUARD::S(G),XS(h)
- S(h);N_GUARD::S(G)
- P(c);OGATE::R1(E),XP(d)
- Refutation
- R(g);CHECK
- Try
- R(E);
- Vars
- R(g);OGATE,XR(E)::QAR1(H),XP(d)
- R(g);OGATE,XS(F)::QAR1(H),XP(d)
- B(e);OGATE,XR(E)::QAB(H)
- S(f);N_GUARD,XR(E)::S(G)
- S(f);N_GUARD::S(G)
- R(g);OGATE::QAR1(H),XP(d)
- B(e);OGATE::QAB(H)
- S(f);N_GUARD::S(G),XS(f)
- S(h);N_GUARD::S(G),XS(h)
- S(h);N_GUARD::S(G)
- P(c);OGATE::R1(E),XP(d)
- Refutation
- R(g);CHECK
- Try
- R(E);XP(c)
- Threat
- R1(E),XP(d)
- Vars
- R(g);OGATE,XP(C)::QAR1(H),XP(d)
- R(g);OGATE::QAR1(H),XP(d)
- B(e);OGATE::QAB(H)
- Refutation
- R(g);CHECK
- Try
- R(E);
- Vars
- R(g);OGATE,XP(C)::QAR1(H),XP(d)
- R(g);OGATE,XS(F)::QAR1(H),XP(d)
- B(e);OGATE::QAB(H)
- S(f);N_GUARD::S(G)
- R(g);OGATE::QAR1(H),XP(d)
- R(g);OGATE,P_PINR(E)::QAR1(H),XP(d)
- S(f);N_GUARD::S(G),XS(f)
- S(h);N_GUARD::S(G),XS(h)
- S(h);N_GUARD::S(G)
- Refutation
- P(c);
- Try
- Actual
- R(E);
- Vars
- R(g);OGATE,XP(C)::QAR1(H),XP(d)
- R(g);OGATE,XS(F)::QAR1(H),XP(d)
- B(e);OGATE::QAB(H)
- S(f);N_GUARD::S(G)
- R(g);OGATE::QAR1(H),XP(d)
- R(g);OGATE,P_PINR(E)::QAR1(H),XP(d)
- S(f);N_GUARD::S(G),XS(f)
- S(h);N_GUARD::S(G),XS(h)
- S(h);N_GUARD::S(G)
- P(c);S_CUTB(e)::R(E)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).