MESON Chess Problem Database
Problem Display
PID: 268234 (8/B7/p2Pr3/qpnbQ1nR/1pkpNRN1/3p1p2/3P1P1b/3BK3 w - - 0 1)
van Gool, Johann Christoffel
3rd Prize, KeyStip 20. Ty., 1978
#2
11 + 13
SOLUTION
- SOUND
- Sets
- 1...Rxe5
- 2.Sxe5#
- 1...Rxd6
- 2.Sxd6#
- 1...Bxe4
- 2.Qxc5#
- 1...Bc6
- 2.Qxc5#
- 1...Bb7
- 2.Qxc5#
- 1...Ba8
- 2.Qxc5#
- 1...Sa4
- 2.Qxd4#
- 1...Scxe4
- 2.Qxd4#
- 1...Sb7
- 2.Qxd4#
- 1...Sd7
- 2.Qxd4#
- 1...Sh3
- 2.Qxd5#
- 1...Sgxe4
- 2.Qxd5#
- 1...Sf7
- 2.Qxd5#
- 1...Sh7
- 2.Qxd5#
- 1...Rxe5
- Tries
- 1.Sc3?
- threat
- 2.Se3#
- 2.Rxd4#
- 1...Rxe5+
- 2.Sxe5#
- 1...bxc3
- 2.Rxd4#
- 1...b3
- 2.Rxd4#
- 1...Be4
- 2.Qxc5#
- 1...Sb3
- 2.Se3#
- 1...Sce4
- 2.Qxd4#
- 2.Qxd5#
- 1...Sge4
- 2.Qxd5#
- 1...Bxf4!
- threat
- 1.Sxc5?
- threat
- 2.Se3#
- 2.Bb3#
- 2.Rxd4#
- 1...Rxe5+
- 2.Sxe5#
- 1...Bxf4
- 2.Bb3#
- 1...b3
- 2.Rxd4#
- 1...Qa1
- 2.Se3#
- 1...Qa2
- 2.Se3#
- 2.Rxd4#
- 1...Qa3
- 2.Se3#
- 2.Rxd4#
- 1...Qa4
- 2.Se3#
- 2.Rxd4#
- 1...Be4
- 2.Bb3#
- 1...Se4
- 2.Bb3#
- 2.Qxd5#
- 1...Qb6!
- threat
- 1.Sxg5?
- threat
- 2.Se3#
- 2.Rxd4#
- 1...Rxe5+
- 2.Sxe5#
- 1...b3
- 2.Rxd4#
- 1...Qa1
- 2.Se3#
- 1...Be4
- 2.Qxc5#
- 1...Sb3
- 2.Se3#
- 1...Se4
- 2.Qxd4#
- 1...Bxf4!
- threat
- 1.Sef6?
- threat
- 2.Se3#
- 2.Rxd4#
- 1...Rxe5+
- 2.Sxe5#
- 1...b3
- 2.Rxd4#
- 1...Qa1
- 2.Se3#
- 1...Be4
- 2.Qxc5#
- 1...Sb3
- 2.Se3#
- 1...Sce4
- 2.Qxd4#
- 2.Qxd5#
- 1...Sge4
- 2.Qxd5#
- 1...Bxf4!
- threat
- 1.Bxc5?
- threat
- 2.Qxd4#
- 1...Rxe5
- 2.Sxe5#
- 1...Qa1!
- threat
- 1.Rxg5?
- threat
- 2.Qxd5#
- 1...Rxe5
- 2.Sxe5#
- 1...Rxd6
- 2.Sxd6#
- 1...Bxe4
- 2.Qxc5#
- 1...Bc6
- 2.Qxc5#
- 1...Bb7
- 2.Qxc5#
- 1...Ba8
- 2.Qxc5#
- 1...b3!
- threat
- 1.Sc3?
- Keys
- 1.Sg3!
- threat
- 2.Se3#
- 2.Rxd4#
- 1...Rxe5+
- 2.Sxe5#
- 1...b3
- 2.Rxd4#
- 1...Qa1
- 2.Se3#
- 1...Be4
- 2.Qxc5#
- 1...Sb3
- 2.Se3#
- 1...Sce4
- 2.Qxd4#
- 1...Sge4
- 2.Qxd5#
- threat
- 1.Sg3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 10
- Sets
- R(m);P_PINS(E),XQ(H)::S(G),XR(m)
- R(m);XP(J)::S(E),XR(m)
- B(j);OGATE,XS(E)::QAR1(H),XS(i)
- B(j);OGATE::QAR1(H),XS(i)
- S(i);::QAR1(H),XP(f)
- S(i);XS(E)::QAR1(H),XP(f)
- S(k);::QAB1(H),XB(j)
- S(k);XS(E)::QAB1(H),XB(j)
- Tries
- Try
- S(E);P_PINP(f),P_SPINQ(H)
- Threat
- DUALS(2)
- Vars
- R(m);CHECK,XQ(H)::S(G),XR(m)
- P(d);XS(E)::R1(F),XP(f)
- P(d);::R1(F),XP(f)
- B(j);N_PINQ(H),N_SPINP(f)::QAR1(H),XS(i)
- S(i);::S(G)
- S(k);N_PINQ(H),N_SPINP(f)::QAB1(H),XB(j)
- Refutation
- B(a);N_SPINP(f),XR(F)
- Try
- S(E);P_PINP(f),P_SPINQ(H),XS(i)
- Threat
- DUALS(3)
- Vars
- R(m);CHECK,XQ(H)::S(G),XR(m)
- B(a);N_SPINP(f),XR(F)::B(A)
- P(d);P_PINP(C)::R1(F),XP(f)
- Q(g);P_PINB(A)::S(G)
- B(j);N_PINQ(H),N_SPINP(f)::B(A)
- Refutation
- Q(g);
- Try
- S(E);P_PINP(f),P_SPINQ(H),XS(k)
- Threat
- DUALS(2)
- Vars
- R(m);CHECK,XQ(H)::S(G),XR(m)
- P(d);P_PINP(C)::R1(F),XP(f)
- Q(g);P_PINB(A)::S(G)
- B(j);N_PINQ(H),N_SPINP(f)::QAR1(H),XS(i)
- S(i);::S(G)
- S(i);N_PINQ(H),N_SPINP(f)::QAR1(H),XP(f)
- Refutation
- B(a);N_SPINP(f),XR(F)
- Try
- S(E);P_PINP(f),P_SPINQ(H)
- Threat
- DUALS(2)
- Vars
- R(m);CHECK,XQ(H)::S(G),XR(m)
- P(d);P_PINP(C)::R1(F),XP(f)
- Q(g);P_PINB(A)::S(G)
- B(j);N_PINQ(H),N_SPINP(f)::QAR1(H),XS(i)
- S(i);::S(G)
- S(k);N_PINQ(H),N_SPINP(f)::QAB1(H),XB(j)
- Refutation
- B(a);N_SPINP(f),XR(F)
- Try
- B(K);XS(i)
- Threat
- QAR1(H),XP(f)
- Vars
- R(m);P_PINS(E),XQ(H)::S(G),XR(m)
- Refutation
- Q(g);P_PINB(A)
- Try
- R(I);XS(k)
- Threat
- QAB1(H),XB(j)
- Vars
- R(m);P_PINS(E),XQ(H)::S(G),XR(m)
- R(m);XP(J)::S(E),XR(m)
- B(j);OGATE,XS(E)::QAR1(H),XS(i)
- B(j);OGATE::QAR1(H),XS(i)
- Refutation
- P(d);P_PINP(C)
- Try
- Actual
- S(E);P_PINP(f),P_SPINQ(H)
- Threat
- DUALS(2)
- Vars
- R(m);CHECK,XQ(H)::S(G),XR(m)
- P(d);P_PINP(C)::R1(F),XP(f)
- Q(g);P_PINB(A)::S(G)
- B(j);N_PINQ(H),N_SPINP(f)::QAR1(H),XS(i)
- S(i);::S(G)
- S(i);N_PINQ(H),N_SPINP(f)::QAR1(H),XP(f)
- S(k);N_PINQ(H),N_SPINP(f)::QAB1(H),XB(j)
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