MESON Chess Problem Database
Problem Display
PID: 250008 (2BQ1R2/2K1p3/8/3PkNb1/R4p2/2P3P1/n2P4/7b w - - 0 1)
Gaasbeek, Alfred
van Woerden, Jan
Schakend Nederland, 1981
#2
10 + 6
| 15601 | Albrecht-Leiss-Degener Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Be4
- 2.d4#
- 1...Bh4
- 2.gxf4#
- 1...Bf6
- 2.gxf4#
- 1...e6
- 2.Qd6#
- 1...Be4
- Tries
- 1.Kc6?
- threat
- 2.Qc7#
- 1...Bxd5+
- 2.Qxd5#
- 1...Sb4+!
- threat
- 1.Se3?
- threat
- 2.Sg4#
- 2.Rf5#
- 1...fxe3
- 2.Rf5#
- 1...Bf3
- 2.Rf5#
- 1...Be4
- 2.Sc4#
- 2.Sg4#
- 2.d4#
- 1...Bf6
- 2.Sg4#
- 2.gxf4#
- 1...e6
- 2.Sg4#
- 2.Qxg5#
- 2.Qd6#
- 1...Sb4!
- threat
- 1.Sh4?
- threat
- 2.Sg6#
- 2.Rf5#
- 1...Bxh4
- 2.Rf5#
- 2.gxf4#
- 1...Be4
- 2.d4#
- 1...Bf6
- 2.Sg6#
- 2.gxf4#
- 1...e6
- 2.Sg6#
- 2.Qxg5#
- 2.Qd6#
- 1...Sb4!
- threat
- 1.Sh6?
- threat
- 2.Sg4#
- 2.Rf5#
- 1...Bxh6
- 2.Rf5#
- 1...Bf3
- 2.Rf5#
- 1...Be4
- 2.Sg4#
- 2.d4#
- 1...Bf6
- 2.Sg4#
- 2.Sf7#
- 2.gxf4#
- 1...e6
- 2.Sg4#
- 2.Qxg5#
- 2.Qd6#
- 1...Sb4!
- threat
- 1.Sxe7?
- threat
- 2.Sc6#
- 2.Sg6#
- 2.Rf5#
- 2.Qd6#
- 1...Bxd5
- 2.Sg6#
- 2.Rf5#
- 2.Qxd5#
- 2.Qd6#
- 1...Bxe7
- 2.Rf5#
- 2.gxf4#
- 1...Be4
- 2.Sc6#
- 2.Qd6#
- 2.d4#
- 1...Bf6
- 2.Sc6#
- 2.Sg6#
- 2.Qd6#
- 2.gxf4#
- 1...Sb4!
- threat
- 1.Sg7?
- threat
- 2.Rf5#
- 1...Be4
- 2.d4#
- 1...Bf6
- 2.gxf4#
- 1...e6
- 2.Qxg5#
- 2.Qd6#
- 1...Sb4!
- threat
- 1.Re4+?
- 1...Bxe4
- 2.d4#
- 1...Kxe4!
- 1...Bxe4
- 1.Qxe7+?
- 1...Kxd5
- 2.Bb7#
- 2.Rd4#
- 2.Rd8#
- 2.Qd6#
- 2.c4#
- 1...Bxe7!
- 1...Kxd5
- 1.Qd7?
- threat
- 2.Qe6#
- 1...e6
- 2.Qxe6#
- 2.Qd6#
- 1...Bxd5!
- threat
- 1.Kc6?
- Keys
- 1.Sd6!
- threat
- 2.Rf5#
- 1...Kxd5
- 2.Ra5#
- 1...Be4
- 2.Sc4#
- 1...Bf6
- 2.Sf7#
- 1...e6
- 2.Qxg5#
- threat
- 1.Sd6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 1
- REMOVED MATES = 1
- Sets
- B(a);SBLOCK::P(A)
- B(e);N_GUARD::P(C),XP(c)
- P(f);N_GUARD::QAB1(I)
- Tries
- Try
- K(G);P-FLIGHT,P_SPINP(E)
- Threat
- QAB(I)
- Vars
- B(a);CHECK,OGATE,XP(E)::QAR1(I),XB(a)
- Refutation
- S(b);CHECK
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- P(c);XS(F)::R1(J)
- B(a);::R1(J)
- Refutation
- S(b);
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- B(a);SBLOCK::P(A)
- Refutation
- S(b);
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- B(e);XS(F)::R1(J)
- B(a);::R1(J)
- Refutation
- S(b);
- Try
- S(F);XP(f)
- Threat
- DUALS(4)
- Refutation
- S(b);
- Try
- S(F);
- Threat
- R1(J)
- Vars
- B(a);SBLOCK::P(A)
- B(e);N_GUARD::P(C),XP(c)
- Refutation
- S(b);
- Try
- R(D);CHECK
- Vars
- B(a);SBLOCK,XR(D)::P(A)
- Refutation
- K(d);P-FLIGHT,XR(D)
- Try
- Q(I);CHECK,XP(f)
- Refutation
- B(e);XQ(I)
- Try
- Q(I);
- Threat
- QAR1(I)
- Refutation
- B(a);XP(E)
- Try
- Actual
- S(F);
- Threat
- R1(J)
- Vars
- K(d);OGATEB,P-FLIGHT,XP(E)::R(D)
- B(a);SBLOCK::S(F)
- B(e);SBLOCK::S(F)
- P(f);OGATE::QAR2(I),XB(e)
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