MESON Chess Problem Database
Problem Display
PID: 53660 (6Q1/p2R4/qpPNK2p/7b/R1P2k1P/3PN3/3PrpP1/2BBb3 w - - 0 1)
van Schoor, L
De Schelde, 1929
#2
14 + 9
| 785 | Het Belgisch Schaakbord (L'Echiquier Belge) | 1950 |
SOLUTION
- SOUND
- Sets
- 1...Qxc4+
- 2.Rxc4#
- 1...Qb5
- 2.cxb5#
- 1...Qb7
- 2.c5#
- 1...Qc8
- 2.c5#
- 1...Rxd2
- 2.Sd5#
- 1...Rxe3+
- 2.dxe3#
- 1...Bf3
- 2.Rf7#
- 2.g3#
- 1...Bg4+
- 2.Qxg4#
- 1...Bf7+
- 2.Rxf7#
- 1...Be8
- 2.Qg4#
- 1...Qxc4+
- Tries
- 1.Se4?
- threat
- 2.Sd5#
- 2.Qg3#
- 2.Qb8#
- 1...Bg4+
- 2.Qxg4#
- 1...Bf7+
- 2.Rxf7#
- 2.Qxf7#
- 1...Rxd2
- 2.Sd5#
- 2.Qg3#
- 1...Rxe3
- 2.Qb8#
- 2.dxe3#
- 1...Bxd2
- 2.Sd5#
- 2.Qg3#
- 1...f1Q
- 2.Sd5#
- 2.Qb8#
- 1...f1S
- 2.Sd5#
- 2.Qb8#
- 1...f1B
- 2.Sd5#
- 2.Qb8#
- 1...f1R
- 2.Sd5#
- 2.Qb8#
- 1...Qb5
- 2.Qg3#
- 1...Qb7
- 2.Sd5#
- 2.Qg3#
- 1...Qc8
- 2.Sd5#
- 2.Qg3#
- 1...Qa5
- 2.Qg3#
- 1...Bg6
- 2.Qb8#
- 1...Be8
- 2.Sd5#
- 2.Qg3#
- 2.Qg4#
- 1...Qxc4+!
- threat
- 1.Sb5?
- threat
- 2.Rd4#
- 2.Qb8#
- 1...Rxe3+
- 2.dxe3#
- 1...Bg4+
- 2.Qxg4#
- 1...Bf7+
- 2.Rxf7#
- 1...Qxb5
- 2.Rd4#
- 2.cxb5#
- 1...Rxd2
- 2.Sd5#
- 1...Bg6
- 2.Qb8#
- 1...Qb7
- 2.Rd4#
- 2.c5#
- 1...Qc8
- 2.c5#
- 1...Bf3
- 2.Rf7#
- 2.Qb8#
- 2.g3#
- 1...Be8
- 2.Rd4#
- 2.Qg4#
- 1...Bxd2!
- threat
- 1.Sf5?
- threat
- 2.Rd4#
- 2.Qg3#
- 2.Qb8#
- 1...Qxc4+
- 2.Rxc4#
- 1...Rxe3+
- 2.dxe3#
- 1...f1Q
- 2.Rd4#
- 2.Qb8#
- 1...f1S
- 2.Rd4#
- 2.Qb8#
- 1...f1B
- 2.Rd4#
- 2.Qb8#
- 1...f1R
- 2.Rd4#
- 2.Qb8#
- 1...Qb5
- 2.Rd4#
- 2.Qg3#
- 2.cxb5#
- 1...Qb7
- 2.Rd4#
- 2.Qg3#
- 2.c5#
- 1...Qc8
- 2.Qg3#
- 2.c5#
- 1...Qa5
- 2.Rd4#
- 2.Qg3#
- 1...Bf3
- 2.Qg3#
- 2.Qb8#
- 2.g3#
- 1...Bg4
- 2.Rd4#
- 2.Qxg4#
- 2.Qb8#
- 1...Bg6
- 2.Rd4#
- 2.Qb8#
- 1...Be8
- 2.Rd4#
- 2.Qg3#
- 2.Qg4#
- 1...Bf7+!
- threat
- 1.Sb7?
- threat
- 2.Rd4#
- 2.Qb8#
- 1...Qxc4+
- 2.Rxc4#
- 1...Rxe3+
- 2.dxe3#
- 1...Bg4+
- 2.Qxg4#
- 1...Bf7+
- 2.Rxf7#
- 1...Qxb7
- 2.Rd4#
- 2.c5#
- 1...Rxd2
- 2.Sd5#
- 1...Bg6
- 2.Qb8#
- 1...Qb5
- 2.Rd4#
- 2.cxb5#
- 1...Qa5
- 2.Rd4#
- 1...Bf3
- 2.Rf7#
- 2.Qb8#
- 2.g3#
- 1...Be8
- 2.Rd4#
- 2.Qg4#
- 1...Bxd2!
- threat
- 1.Sf7?
- threat
- 2.Rd4#
- 2.Qb8#
- 1...Qxc4+
- 2.Rxc4#
- 1...Rxe3+
- 2.dxe3#
- 1...Bg4+
- 2.Qxg4#
- 1...Bxf7+
- 2.Rxf7#
- 1...Rxd2
- 2.Sd5#
- 1...Bg6
- 2.Qb8#
- 1...Qb5
- 2.Rd4#
- 2.cxb5#
- 1...Qb7
- 2.Rd4#
- 2.c5#
- 1...Qc8
- 2.c5#
- 1...Qa5
- 2.Rd4#
- 1...Bf3
- 2.Qb8#
- 2.g3#
- 1...Bxd2!
- threat
- 1.Bxe2?
- threat
- 2.Sd5#
- 2.g3#
- 1...Qxc4+
- 2.Sd5#
- 2.Rxc4#
- 1...Bg4+
- 2.Qxg4#
- 1...Bf7+
- 2.Rxf7#
- 1...Bxd2
- 2.Sd5#
- 1...Bxe2
- 2.Sd5#
- 2.Rf7#
- 1...f1Q
- 2.Sd5#
- 1...f1S
- 2.Sd5#
- 1...f1B
- 2.Sd5#
- 1...f1R
- 2.Sd5#
- 1...Qb5
- 2.g3#
- 2.cxb5#
- 1...Qa5
- 2.g3#
- 1...Bf3
- 2.Rf7#
- 2.g3#
- 1...Bg6!
- threat
- 1.Qg7?
- threat
- 2.Qe5#
- 1...Qxc4+
- 2.Rxc4#
- 1...Rxe3+
- 2.dxe3#
- 1...Bg4+
- 2.Qxg4#
- 1...Bf7+
- 2.Rxf7#
- 1...Qb5
- 2.cxb5#
- 1...Qa5!
- threat
- 1.c5+?
- 1...Qc4+
- 2.Rxc4#
- 1...Qxa4!
- 1...Qc4+
- 1.Se4?
- Keys
- 1.Qb8!
- threat
- 2.Se4#
- 2.Sb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- 1...Qxc4+
- 2.Sxc4#
- 1...Rxe3+
- 2.Se4#
- 1...Bg4+
- 2.Sf5#
- 1...Bf7+
- 2.Sxf7#
- 1...Kg3
- 2.Sf5#
- 1...Rxd2
- 2.Sdf5#
- 1...Bxd2
- 2.Sf5#
- 1...Qa5
- 2.Sb5#
- 1...Qb5
- 2.Sxb5#
- 1...Qb7
- 2.Sxb7#
- 1...Qc8
- 2.Sxc8#
- 1...Be8
- 2.Se4#
- 2.Sb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Sxe8#
- 1...b5
- 2.Se4#
- 2.Sxb5#
- 2.Sf5#
- 2.Sb7#
- 2.Sf7#
- 2.Sc8#
- 2.Se8#
- threat
- 1.Qb8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 8
- ADDED MATES = 3
- REMOVED MATES = 1
- Sets
- Q(f);CHECK,OGATE,P_SPINQ(f),XP(H)::R(G),XQ(f)
- Q(f);OGATE::R(G)+P(H),XQ(f)
- Q(f);N_GUARD::R(G)+P(H)
- Q(f);N_GUARD,P_PINR(M)::R(G)+P(H)
- R(b);N_PINS(F),XP(C)::S(F)
- R(b);CHECK,OGATE,XS(F)::P(C),XR(b)
- B(e);CHECK,N_GUARD::QAR1(N),XB(e)
- B(e);CHECK,N_GUARD::R(M),XB(e)
- B(e);N_GUARD::QAR1(N)
- Tries
- Try
- S(K);N_SPINS(F)
- Threat
- DUALS(3)
- Vars
- B(e);CHECK,N_GUARD::QAR1(N),XB(e)
- Q(f);::QAB1(N)
- B(e);::QAB(N)
- Refutation
- Q(f);CHECK,XP(H)
- Try
- S(K);
- Threat
- DUALS(2)
- Vars
- R(b);CHECK,OGATE,XS(F)::P(C),XR(b)
- B(e);CHECK,N_GUARD::QAR1(N),XB(e)
- B(e);CHECK,N_GUARD::R(M),XB(e)
- R(b);N_PINS(F),XP(C)::S(F)
- B(e);::QAB(N)
- Q(f);N_GUARD,P_PINR(M)::R(G)+P(H)
- Refutation
- B(a);XP(C)
- Try
- S(K);
- Threat
- DUALS(3)
- Vars
- Q(f);CHECK,OGATE,P_SPINQ(f),XP(H)::R(G),XQ(f)
- R(b);CHECK,OGATE,XS(F)::P(C),XR(b)
- Refutation
- B(e);CHECK
- Try
- S(K);
- Threat
- DUALS(2)
- Vars
- Q(f);CHECK,OGATE,P_SPINQ(f),XP(H)::R(G),XQ(f)
- R(b);CHECK,OGATE,XS(F)::P(C),XR(b)
- B(e);CHECK,N_GUARD::QAR1(N),XB(e)
- B(e);CHECK,N_GUARD::R(M),XB(e)
- R(b);N_PINS(F),XP(C)::S(F)
- B(e);::QAB(N)
- Q(f);::R(M)
- Refutation
- B(a);XP(C)
- Try
- S(K);
- Threat
- DUALS(2)
- Vars
- Q(f);CHECK,OGATE,P_SPINQ(f),XP(H)::R(G),XQ(f)
- R(b);CHECK,OGATE,XS(F)::P(C),XR(b)
- B(e);CHECK,N_GUARD::QAR1(N),XB(e)
- B(e);CHECK,OGATE,XS(K)::R(M),XB(e)
- R(b);N_PINS(F),XP(C)::S(F)
- B(e);::QAB(N)
- Q(f);N_GUARD,P_PINR(M)::R(G)+P(H)
- Q(f);::R(M)
- Refutation
- B(a);XP(C)
- Try
- B(B);N_SPINS(F),XR(b)
- Threat
- DUALS(2)
- Vars
- B(e);CHECK,N_GUARD::QAR1(N),XB(e)
- B(e);CHECK,N_GUARD::R(M),XB(e)
- B(a);XP(C)::S(F)
- P(c);::S(F)
- Q(f);::P(D)
- Refutation
- B(e);
- Try
- Q(N);
- Threat
- QAB1(N)
- Vars
- Q(f);CHECK,OGATE,P_SPINQ(f),XP(H)::R(G),XQ(f)
- R(b);CHECK,OGATE,XS(F)::P(C),XR(b)
- B(e);CHECK,N_GUARD::QAR1(N),XB(e)
- B(e);CHECK,N_GUARD::R(M),XB(e)
- Q(f);OGATE::R(G)+P(H),XQ(f)
- Refutation
- Q(f);
- Try
- P(H);CHECK
- Vars
- Q(f);CHECK,N_GUARD,P_SPINQ(f)::R(G),XQ(f)
- Refutation
- Q(f);XR(G)
- Try
- Actual
- Q(N);
- Threat
- DUALS(7)
- Vars
- Q(f);CHECK,P_SPINQ(f),XP(H)::QAB(N)+S(K),XQ(f)
- R(b);CHECK,XS(F)::QAB(N)+S(K)
- B(e);CHECK::QAB(N)+S(K)
- B(e);CHECK::QAB(N)+S(K),XB(e)
- K(d);S_FLIGHT::QAB(N)+S(K),DCHECK
- R(b);N_PINS(F),XP(C)::QAB(N)+S(K)
- B(a);XP(C)::QAB(N)+S(K)
- Q(f);::QAB(N)+S(K)
- Q(f);::QAB(N)+S(K),XQ(f)
- Q(f);P_PINR(M)::QAB(N)+S(K),XQ(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).