MESON Chess Problem Database
Problem Display
PID: 178623 (2b1B3/B2np3/qR5r/p2kPP2/R1np2p1/3N4/4KN2/2Q5 w - - 0 1)
Ellerman, Arnoldo
Bulletin Ouvrier des Echecs, 1952
#2
10 + 10
SOLUTION
- SOUND
- Sets
- 1...Qb7
- 2.Qxc4#
- 1...Qxb6
- 2.Qxc4#
- 1...Qxa7
- 2.Qxc4#
- 1...Rh1
- 2.Qxh1#
- 1...Rxb6
- 2.Qh1#
- 1...Rc6
- 2.Qh1#
- 1...Rd6
- 2.Qh1#
- 1...Re6
- 2.Qh1#
- 1...Rf6
- 2.Qh1#
- 1...Rg6
- 2.Qh1#
- 1...Sd6
- 2.Qc6#
- 1...Sf6
- 2.Bc6#
- 1...Qb7
- Tries
- 1.Sf4+?
- 1...Kc5
- 2.S2d3#
- 2.Se4#
- 1...Kxe5!
- 1...Kc5
- 1.Bf7+?
- 1...Re6
- 2.Bxe6#
- 2.Qh1#
- 1...e6!
- 1...Re6
- 1.Rb5+?
- 1...Kc6
- 2.Qxc4#
- 1...Sc5
- 2.Rxc5#
- 2.Qxc4#
- 1...Qxb5!
- 1...Kc6
- 1.Rd6+?
- 1...Qxd6
- 2.Qxc4#
- 1...Rxd6
- 2.Qh1#
- 1...Sxd6
- 2.Rxd4#
- 1...exd6!
- 1...Qxd6
- 1.Qf4?
- threat
- 2.Qe4#
- 1...Sd2
- 2.Rxd4#
- 2.Qxd4#
- 1...Sd6
- 2.Rxd4#
- 2.Qxd4#
- 1...Sf6
- 2.Bc6#
- 1...Sc5!
- threat
- 1.Qxh6?
- threat
- 2.Qh1#
- 2.Qc6#
- 2.Qe6#
- 1...Qxb6
- 2.Qh1#
- 1...Scxe5
- 2.Qe6#
- 1...Scxb6
- 2.Qh1#
- 2.Qe6#
- 1...Sdxb6
- 2.Bc6#
- 2.Qh1#
- 2.Qc6#
- 1...Qb5
- 2.Qh1#
- 2.Qe6#
- 1...Qb7
- 2.Qh1#
- 2.Qe6#
- 1...Bb7
- 2.Qh1#
- 2.Qe6#
- 1...Sd2
- 2.Qc6#
- 2.Qe6#
- 1...Se3
- 2.Qc6#
- 2.Qe6#
- 1...Sd6
- 2.Qe6#
- 1...Sc5
- 2.Bc6#
- 2.Qc6#
- 1...Sf6
- 2.Bc6#
- 1...Sb8
- 2.Qh1#
- 1...Sf8
- 2.Bc6#
- 2.Qh1#
- 2.Qc6#
- 1...g3
- 2.Qc6#
- 2.Qe6#
- 1...e6
- 2.Qh1#
- 2.Qxe6#
- 1...Sdxe5!
- threat
- 1.Sf4+?
- Keys
- 1.Re6!
- threat
- 2.Sf4#
- 1...Qxe6
- 2.Qxc4#
- 1...Qxa7
- 2.Qxc4#
- 1...Rxe6
- 2.Qh1#
- 1...Scxe5
- 2.Rxd4#
- 1...Qd6
- 2.Qxc4#
- 1...Qb6
- 2.Qxc4#
- 1...Sb2
- 2.Rxd4#
- 1...Sd2
- 2.Rxd4#
- 1...Sa3
- 2.Rxd4#
- 1...Se3
- 2.Rxd4#
- 1...Scb6
- 2.Qc6#
- 1...Sd6
- 2.Rxd4#
- 1...Sdb6
- 2.Bc6#
- threat
- 1.Re6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 9
- REMOVED MATES = 8
- Sets
- Q(f);N_GUARD::QAB1(A),XS(a)
- Q(f);N_GUARD,XR(H)::QAB1(A),XS(a)
- Q(f);N_GUARD,XB(I)::QAB1(A),XS(a)
- R(g);N_GUARD::QAB(A),XR(g)
- R(g);N_GUARD,XR(H)::QAB(A)
- R(g);N_GUARD::QAB(A)
- R(g);N_GUARD,P_PINP(F)::QAB(A)
- S(a);OGATE,P_PINS(D)::QAB1(A)
- S(h);OGATE::B(J)
- Tries
- Try
- S(D);CHECK
- Refutation
- K(e);P-FLIGHT,XP(F)
- Try
- B(J);CHECK
- Refutation
- P(i);P_SPINP(i)
- Try
- R(H);CHECK
- Vars
- K(e);P_SPINS(a),S_FLIGHT::QAR2(A),XS(a)
- Refutation
- Q(f);XR(H)
- Try
- R(H);CHECK
- Vars
- Q(f);XR(H)::QAB1(A),XS(a)
- R(g);XR(H)::QAB(A)
- S(a);OGATE,P_PINS(D),XR(H)::R1(E),XP(b)
- Refutation
- P(i);XR(H)
- Try
- Q(A);
- Threat
- QAB1(A)
- Vars
- S(h);OGATE::B(J)
- Refutation
- S(h);
- Try
- Q(A);XR(g)
- Threat
- DUALS(3)
- Vars
- Q(f);XR(H)::QAB(A)
- S(a);P_PINS(D),XP(F)::QAB1(A)
- S(a);P_PINS(D)::QAB1(A)
- S(h);OGATE::B(J)
- S(h);::QAB(A)
- Refutation
- S(h);XP(F)
- Try
- Actual
- R(H);
- Threat
- S(D)
- Vars
- Q(f);N_GUARD,P_PINP(F),XR(H)::QAB1(A),XS(a)
- Q(f);N_GUARD,XB(I)::QAB1(A),XS(a)
- R(g);N_GUARD,P_PINP(F),XR(H)::QAB(A)
- S(a);OGATE,P_PINS(D),XP(F)::R1(E),XP(b)
- Q(f);N_GUARD::QAB1(A),XS(a)
- S(a);OGATE,P_PINS(D)::R1(E),XP(b)
- S(a);OGATE,P_PINS(D)::QAB1(A)
- S(h);OGATE::B(J)
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).