MESON Chess Problem Database
Problem Display
PID: 225058 (8/1BnQN3/r2P4/P6b/Npkpp3/1R1R4/K3P3/8 w - - 0 1)
Shire, David J
The Problemist, 2020
#2
10 + 7
SOLUTION
- SOUND
- Sets
- 1...Rc6
- 2.Qxc6#
- 1...Ra7
- 2.Qc6#
- 1...Ra8
- 2.Qc6#
- 1...Sb5
- 2.Bd5#
- 2.Qe6#
- 1...Sd5
- 2.Bxd5#
- 2.Bxa6#
- 1...Se6
- 2.Bd5#
- 2.Bxa6#
- 1...Sa8
- 2.Bd5#
- 2.Bxa6#
- 1...Se8
- 2.Bd5#
- 2.Bxa6#
- 1...exd3
- 2.exd3#
- 1...Rc6
- Tries
- 1.Sb6+?
- 1...Kc5
- 2.Qc6#
- 1...Rxb6!
- 1...Kc5
- 1.Sd5?
- threat
- 2.Rxb4#
- 1...Sxd5
- 2.Bxa6#
- 1...Rc6
- 2.Qxc6#
- 1...Rb6
- 2.Sdxb6#
- 1...Bxe2!
- threat
- 1.Sf5?
- threat
- 2.Rxd4#
- 1...Rxd6
- 2.Sxd6#
- 1...exd3
- 2.exd3#
- 1...Rc6
- 2.Qxc6#
- 1...Sb5
- 2.Qe6#
- 1...Se6!
- threat
- 1.Bxa6+?
- 1...Sb5
- 2.Bxb5#
- 2.Qxb5#
- 2.Qc6#
- 2.Qe6#
- 2.Qc8#
- 2.Qc7#
- 1...Sxa6!
- 1...Sb5
- 1.Rd1?
- threat
- 2.Rc1#
- 1...Rc6
- 2.Qxc6#
- 1...Sb5
- 2.Bd5#
- 2.Qe6#
- 1...Sd5
- 2.Bxd5#
- 2.Bxa6#
- 1...d3!
- threat
- 1.Rd2?
- threat
- 2.Rc2#
- 1...Rc6
- 2.Qxc6#
- 1...Sb5
- 2.Bd5#
- 2.Qe6#
- 1...Sd5
- 2.Bxd5#
- 2.Bxa6#
- 1...d3!
- threat
- 1.Qb5+?
- 1...Sxb5
- 2.Bd5#
- 1...Kxb5!
- 1...Sxb5
- 1.Qf5?
- threat
- 2.Sb2#
- 2.Qc5#
- 1...Sd5
- 2.Bxa6#
- 2.Qxd5#
- 1...Rc6
- 2.Sb2#
- 1...Se6
- 2.Sb2#
- 2.Bxa6#
- 2.Qd5#
- 1...Rxa5!
- threat
- 1.Qe6+?
- 1...Sd5
- 2.Bxa6#
- 2.Qxd5#
- 1...Sxe6
- 2.Bxa6#
- 1...Kb5!
- 1...Sd5
- 1.Qxc7+?
- 1...Rc6
- 2.Ba6#
- 2.Qxc6#
- 1...Kb5!
- 1...Rc6
- 1.dxc7?
- threat
- 2.Bd5#
- 2.Bxa6#
- 2.Rxd4#
- 2.Qd5#
- 1...Rxa5
- 2.Rxd4#
- 1...exd3
- 2.Bd5#
- 2.Bxa6#
- 2.Qd5#
- 2.exd3#
- 1...Rc6
- 2.Qxc6#
- 2.Qd5#
- 1...Rb6
- 2.Bd5#
- 2.Rxd4#
- 2.Qd5#
- 1...Re6
- 2.Bd5#
- 2.Rxd4#
- 2.Qd5#
- 1...Rf6
- 2.Bd5#
- 2.Rxd4#
- 2.Qd5#
- 1...Rg6
- 2.Bd5#
- 2.Rxd4#
- 2.Qd5#
- 1...Rh6
- 2.Bd5#
- 2.Rxd4#
- 2.Qd5#
- 1...Ra7
- 2.Bd5#
- 2.Rxd4#
- 2.Qc6#
- 2.Qd5#
- 2.c8Q#
- 2.c8R#
- 1...Ra8
- 2.Bd5#
- 2.Rxd4#
- 2.Qc6#
- 2.Qd5#
- 1...Bf7
- 2.Bxa6#
- 2.Rxd4#
- 1...Rd6!
- threat
- 1.Sb6+?
- Keys
- 1.Sc6!
- threat
- 2.Se5#
- 1...Kb5
- 2.Rxb4#
- 1...Kd5
- 2.Rxd4#
- 1...Rxa5
- 2.Sxa5#
- 1...Rxc6
- 2.Qxc6#
- threat
- 1.Sc6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 3
- Sets
- R(f);N_GUARD::QAR2(I),XR(f)
- R(f);N_GUARD::QAR2(I)
- P(d);OGATE,XR(D)::P(B),XP(d)
- Tries
- Try
- S(E);CHECK,P_SPINP(F)
- Vars
- K(b);P-FLIGHT::QAR1(I)
- Refutation
- R(f);N_PINP(F),XS(E)
- Try
- S(J);
- Threat
- R1(C),XP(a)
- Vars
- S(g);N_GUARD,SBLOCK,XS(J)::B(H),XR(f)
- R(f);N_GUARD::QAR2(I),XR(f)
- R(f);N_GUARD::S(J),XR(f)
- Refutation
- B(e);XP(B)
- Try
- S(J);
- Threat
- R1(D),XP(c)
- Vars
- R(f);XP(G)::S(J),XR(f)
- P(d);OGATE,XR(D)::P(B),XP(d)
- R(f);N_GUARD::QAR2(I),XR(f)
- S(g);N_GUARD,SBLOCK::QAB(I)
- Refutation
- S(g);
- Try
- B(H);CHECK,XR(f)
- Refutation
- S(g);XB(H)
- Try
- R(D);
- Threat
- R(D)
- Vars
- R(f);N_GUARD::QAR2(I),XR(f)
- Refutation
- P(c);
- Try
- R(D);
- Threat
- R(D)
- Vars
- R(f);N_GUARD::QAR2(I),XR(f)
- Refutation
- P(c);
- Try
- Q(I);CHECK
- Vars
- S(g);SBLOCK,XQ(I)::B(H)
- Refutation
- K(b);P_SPINP(a),S_FLIGHT,XQ(I)
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- R(f);::S(E)
- Refutation
- R(f);P_PINS(E),XP(F)
- Try
- Q(I);CHECK
- Vars
- S(g);XQ(I)::B(H),XR(f)
- Refutation
- K(b);P_SPINP(a),S_FLIGHT
- Try
- Q(I);CHECK,XS(g)
- Refutation
- K(b);P_SPINP(a),S_FLIGHT
- Try
- P(G);XS(g)
- Threat
- DUALS(4)
- Vars
- R(f);P_PINS(E),XP(F)::R1(D),XP(c)
- Refutation
- R(f);
- Try
- Actual
- S(J);
- Threat
- S(J)
- Vars
- K(b);P_SPINP(a),S_FLIGHT::R1(C),XP(a)
- K(b);P_SPINP(c),S_FLIGHT::R1(D),XP(c)
- R(f);P_PINS(E),XP(F)::S(J),XR(f)
- R(f);OGATE,XS(J)::QAR2(I),XR(f)
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).