MESON Chess Problem Database
Problem Display
PID: 179778 (bn2n1rb/N2NpB2/p1Pk4/Q1p1R3/2P2Pp1/2K1B2q/3P4/3R4 w - - 0 1)
Prins, Hendrik
Probleemblad, 1979
#2
12 + 11
SOLUTION
- SOUND
- Sets
- 1...Qf1
- 2.Bxc5#
- 1...Qg2
- 2.Bxc5#
- 1...Qh1
- 2.Bxc5#
- 1...Qh2
- 2.Bxc5#
- 1...Qxe3+
- 2.dxe3#
- 1...Qh4
- 2.Bxc5#
- 1...Qh5
- 2.Bxc5#
- 1...Qh6
- 2.Bxc5#
- 1...Qh7
- 2.Bxc5#
- 1...Rg7
- 2.Rd5#
- 2.Re6#
- 1...Bxe5+
- 2.fxe5#
- 1...Sf6
- 2.Re6#
- 1...Sc7
- 2.Qxc5#
- 1...Sg7
- 2.Rd5#
- 1...g3
- 2.Bxc5#
- 1...Qf1
- Tries
- 1.Kb3?
- threat
- 2.Rd5#
- 2.Re6#
- 1...Qxe3+
- 2.dxe3#
- 1...Bxe5
- 2.fxe5#
- 1...Sxc6
- 2.Rd5#
- 1...e6
- 2.Rxe6#
- 1...Qg2
- 2.Bxc5#
- 2.Re6#
- 1...Qh1
- 2.Bxc5#
- 2.Re6#
- 1...Qf3
- 2.Re6#
- 1...Qh5
- 2.Bxc5#
- 2.Re6#
- 1...Qh6
- 2.Bxc5#
- 2.Rd5#
- 1...Rg5
- 2.Re6#
- 1...Rg6
- 2.Rd5#
- 1...Sf6
- 2.Re6#
- 1...Sc7
- 2.Qxc5#
- 1...Sg7
- 2.Rd5#
- 1...g3
- 2.Bxc5#
- 2.Rd5#
- 1...Bxc6!
- threat
- 1.Sf6?
- threat
- 2.Se4#
- 2.Rd5#
- 2.Re6#
- 1...Qxe3+
- 2.dxe3#
- 1...Bxc6
- 2.Sc8#
- 2.Re6#
- 1...Sxc6
- 2.Sc8#
- 2.Rd5#
- 2.Re6#
- 1...Sxf6
- 2.Re6#
- 1...exf6
- 2.Re6#
- 1...e6
- 2.Rxe6#
- 1...Qg2
- 2.Bxc5#
- 2.Re6#
- 1...Qh1
- 2.Bxc5#
- 2.Re6#
- 1...Qf3
- 2.Re6#
- 1...Qh5
- 2.Se4#
- 2.Bxc5#
- 2.Re6#
- 1...Qh7
- 2.Bxc5#
- 2.Rd5#
- 2.Re6#
- 1...Rg5
- 2.Se4#
- 2.Sxe8#
- 2.Re6#
- 1...Sc7
- 2.Se4#
- 2.Qxc5#
- 1...Sg7
- 2.Se4#
- 2.Rd5#
- 1...g3
- 2.Se4#
- 2.Bxc5#
- 2.Rd5#
- 1...Bxf6!
- threat
- 1.Sxb8?
- threat
- 2.Sc8#
- 2.Qd8#
- 1...Qxe3+
- 2.dxe3#
- 1...Bxc6
- 2.Sc8#
- 1...Bb7
- 2.Qd8#
- 1...Sf6
- 2.Re6#
- 1...Sc7
- 2.Qxc5#
- 1...Sg7
- 2.Rd5#
- 1...g3
- 2.Bxc5#
- 1...Bxe5+!
- threat
- 1.d4?
- threat
- 2.Rd5#
- 2.Re6#
- 2.dxc5#
- 1...cxd4+
- 2.Rxd4#
- 1...Bxc6
- 2.dxc5#
- 1...Bxe5
- 2.dxe5#
- 2.fxe5#
- 1...Sxc6
- 2.Rd5#
- 2.dxc5#
- 1...e6
- 2.Rxe6#
- 1...Qg2
- 2.Re6#
- 2.dxc5#
- 1...Qh1
- 2.Re6#
- 2.dxc5#
- 1...Qf3
- 2.Re6#
- 2.dxc5#
- 1...Qh5
- 2.Re6#
- 2.dxc5#
- 1...Qh6
- 2.Rd5#
- 2.dxc5#
- 1...Rg5
- 2.Re6#
- 2.dxc5#
- 1...Rg6
- 2.Rd5#
- 2.dxc5#
- 1...Sf6
- 2.Re6#
- 2.dxc5#
- 1...Sc7
- 2.Qxc5#
- 2.dxc5#
- 1...Sg7
- 2.Rd5#
- 2.dxc5#
- 1...g3
- 2.Rd5#
- 2.dxc5#
- 1...Qxe3+!
- threat
- 1.Kb3?
- Keys
- 1.Qd8!
- threat
- 2.Sxb8#
- 1...Qxe3+
- 2.dxe3#
- 1...Bxe5+
- 2.fxe5#
- 1...Bxc6
- 2.Sc8#
- 1...Sxc6
- 2.Sc8#
- 1...Sxd7
- 2.Qxd7#
- 1...Sf6
- 2.Re6#
- 1...Sc7
- 2.Qxe7#
- 1...Sg7
- 2.Rd5#
- 1...g3
- 2.Bxc5#
- threat
- 1.Qd8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 8
- Sets
- Q(a);N_PINB(D)::B(D),XP(c)
- Q(a);CHECK,XB(D)::R(A)+P(B),XQ(a)
- B(k);CHECK,OGATE,XR(H)::P(F),XB(k)
- S(i);N_PINR(H)::R1(H)
- S(i);SBLOCK::QAB1(G),XP(c)
- P(b);N_PINB(D)::B(D),XP(c)
- Tries
- Try
- K(C);N_SPINR(H),P-FLIGHT
- Threat
- DUALS(2)
- Vars
- Q(a);CHECK,XB(D)::R(A)+P(B),XQ(a)
- B(k);OGATE,XR(H)::P(F),XB(k)
- S(h);XP(I)::R1(H)
- P(f);::R1(H),XP(f)
- Q(a);::R1(H)
- R(j);::R1(H)
- S(i);::R1(H)
- S(i);SBLOCK::QAB1(G),XP(c)
- Refutation
- B(g);XP(I)
- Try
- S(K);N_SPINR(H)
- Threat
- DUALS(3)
- Vars
- Q(a);CHECK,XB(D)::R(A)+P(B),XQ(a)
- S(i);XS(K)::R1(H)
- P(f);XS(K)::R1(H)
- P(f);::R1(H),XP(f)
- Q(a);::R1(H)
- Refutation
- B(k);P_PINR(H),XS(K)
- Try
- S(K);XS(h)
- Threat
- DUALS(2)
- Vars
- Q(a);CHECK,XB(D)::R(A)+P(B),XQ(a)
- B(g);XP(I)::S(J)
- B(g);::QAR2(G)
- S(i);N_PINR(H)::R1(H)
- S(i);SBLOCK::QAB1(G),XP(c)
- P(b);N_PINB(D)::B(D),XP(c)
- Refutation
- B(k);CHECK,XR(H)
- Try
- P(B);N_SPINR(H)
- Threat
- DUALS(3)
- Vars
- P(c);CHECK,OGATE,P_SPINP(c),XP(B)::R(A),XP(c)
- B(g);XP(I)::R(A)+P(B)DCHECK,XP(c)
- P(f);::R1(H),XP(f)
- Refutation
- Q(a);CHECK,XB(D)
- Try
- Actual
- Q(G);
- Threat
- QAR(G)+S(K),XS(h)
- Vars
- Q(a);CHECK,XB(D)::R(A)+P(B),XQ(a)
- B(k);CHECK,OGATE,XR(H)::P(F),XB(k)
- B(g);SBLOCK,XP(I)::S(J)
- S(h);SBLOCK,XP(I)::S(J)
- S(h);OGATE,P_SPINS(h),XS(K)::QAR1(G),XS(h)
- S(i);N_PINR(H)::R1(H)
- S(i);SBLOCK::QAB1(G),XP(f)
- P(b);N_PINB(D)::B(D),XP(c)
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).