MESON Chess Problem Database
Problem Display
PID: 232258 (5n2/3p1Q1p/2pR1P1P/5kpn/1p1B4/1K3Pp1/1PN3N1/1B1b4 w - - 0 1)
Westberg, CE
Tidskrift for Schack, 1913
#2
11 + 10
SOLUTION
- SOUND
- Sets
- 1...Bxc2+
- 2.Bxc2#
- 1...Be2
- 2.Sce3#
- 1...Bxf3
- 2.Sce3#
- 1...Sf4
- 2.Se3#
- 1...Sxf6
- 2.Rxf6#
- 2.Qxf6#
- 1...Sg7
- 2.fxg7#
- 1...Se6
- 2.Qxh7#
- 1...Sg6
- 2.Qxd7#
- 1...g4
- 2.Qxh5#
- 1...c5
- 2.Rd5#
- 1...Bxc2+
- Tries
- 1.Ka2?
- threat
- 2.Sce3#
- 1...Bxc2
- 2.Bxc2#
- 1...g4
- 2.Qxh5#
- 1...b3+!
- threat
- 1.Kxb4?
- threat
- 2.Sce3#
- 1...Bxc2
- 2.Bxc2#
- 1...g4
- 2.Qxh5#
- 1...c5+!
- threat
- 1.Kc4?
- threat
- 2.Sce3#
- 1...Bxc2
- 2.Bxc2#
- 1...g4
- 2.Qxh5#
- 1...Be2+!
- threat
- 1.Bc3?
- 1...Bxc2+
- 2.Bxc2#
- 1...Bxf3
- 2.Sce3#
- 1...Sxf6
- 2.Rxf6#
- 2.Qxf6#
- 1...g4
- 2.Qxh5#
- 1...Be2
- 2.Sce3#
- 1...Sf4
- 2.Se3#
- 1...Sg7
- 2.fxg7#
- 1...Se6
- 2.Qxh7#
- 1...Sg6
- 2.Qxd7#
- 1...c5
- 2.Rd5#
- 1...bxc3!
- 1...Bxc2+
- 1.Qe8?
- threat
- 2.Qe4#
- 1...Bxc2+
- 2.Bxc2#
- 1...Bxf3
- 2.Sce3#
- 1...Sxf6
- 2.Rxf6#
- 1...g4
- 2.Qxh5#
- 1...Se6!
- threat
- 1.Qxh7+?
- 1...Sg6
- 2.Qxd7#
- 1...Sxh7!
- 1...Sg6
- 1.Ka2?
- Keys
- 1.Ka4!
- 1...Bxc2+
- 2.Bxc2#
- 1...Bxf3
- 2.Sce3#
- 1...Sxf6
- 2.Rxf6#
- 2.Qxf6#
- 1...g4
- 2.Qxh5#
- 1...Be2
- 2.Sce3#
- 1...Sf4
- 2.Se3#
- 1...Sg7
- 2.fxg7#
- 1...Se6
- 2.Qxh7#
- 1...Sg6
- 2.Qxd7#
- 1...b3
- 2.Sce3#
- 1...c5
- 2.Rd5#
- 1...Bxc2+
- 1.Ka4!
FEATURES
- Static
- TYPE = WAITER
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- B(a);CHECK,OGATE,P_SPINB(a),XS(C)::B(A),XB(a)
- B(a);N_PINS(C)::B(A)+S(C),DCHECK
- B(a);N_PINS(C),XP(F)::B(A)+S(C),DCHECK
- S(f);SBLOCK::S(D)
- S(f);OGATE::QAR(K)+P(I),XS(f)
- S(j);N_GUARD::QAB(K),XP(i)
- S(j);N_GUARD,SBLOCK::QAB(K),XP(h)
- P(e);OGATEB::QAR2(K),XS(f)
- P(g);N_GUARD::R(H)
- Tries
- Try
- K(E);N_SPINS(C),S_FLIGHT
- Threat
- B(A)+S(C),DCHECK
- Vars
- B(a);OGATE,P_SPINB(a),XS(C)::B(A),XB(a)
- P(e);OGATEB::QAR2(K),XS(f)
- Refutation
- P(c);CHECK
- Try
- K(E);N_SPINS(C),P-FLIGHT,XP(c)
- Threat
- B(A)+S(C),DCHECK
- Vars
- B(a);OGATE,P_SPINB(a),XS(C)::B(A),XB(a)
- P(e);OGATEB::QAR2(K),XS(f)
- Refutation
- P(g);CHECK
- Try
- K(E);N_SPINS(C),S_FLIGHT
- Threat
- B(A)+S(C),DCHECK
- Vars
- B(a);OGATE,P_SPINB(a),XS(C)::B(A),XB(a)
- P(e);OGATEB::QAR2(K),XS(f)
- Refutation
- B(a);CHECK
- Try
- B(G);
- Vars
- B(a);CHECK,OGATE,P_SPINB(a),XS(C)::B(A),XB(a)
- B(a);N_PINS(C),XP(F)::B(A)+S(C),DCHECK
- P(e);OGATEB::QAR2(K),XS(f)
- B(a);N_PINS(C)::B(A)+S(C),DCHECK
- S(f);SBLOCK::S(D)
- S(f);OGATE::QAR(K)+P(I),XS(f)
- S(j);N_GUARD::QAB(K),XP(i)
- S(j);N_GUARD,SBLOCK::QAB(K),XP(h)
- P(g);N_GUARD::R(H)
- Refutation
- P(c);XB(G)
- Try
- Q(K);
- Threat
- QAB1(K)
- Vars
- B(a);CHECK,OGATE,P_SPINB(a),XS(C)::B(A),XB(a)
- B(a);N_PINS(C),XP(F)::B(A)+S(C),DCHECK
- S(f);OGATE,XP(I)::R1(H),XS(f)
- P(e);OGATEB::QAR2(K),XS(f)
- Refutation
- S(j);
- Try
- Q(K);CHECK,XP(i)
- Vars
- S(j);N_GUARD,P_SPINS(j),SBLOCK::QAB(K),XP(h)
- Refutation
- S(j);XQ(K)
- Try
- Actual
- K(E);S_FLIGHT
- Vars
- B(a);CHECK,OGATE,P_SPINB(a),XS(C)::B(A),XB(a)
- B(a);N_PINS(C),XP(F)::B(A)+S(C),DCHECK
- P(e);OGATEB::QAR2(K),XS(f)
- B(a);N_PINS(C)::B(A)+S(C),DCHECK
- S(f);SBLOCK::S(D)
- S(f);OGATE::QAR(K)+P(I),XS(f)
- S(j);N_GUARD::QAB(K),XP(i)
- S(j);N_GUARD,SBLOCK::QAB(K),XP(h)
- P(c);N_PINS(C)::B(A)+S(C),DCHECK
- P(g);N_GUARD::R(H)
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).