MESON Chess Problem Database
Problem Display
PID: 64881 (b7/2Np1nK1/3Pr1np/p3kB2/R5P1/1P3p2/1NP2Ppq/Q2R4 w - - 0 1)
Groeneveld, Cornelis
1st Prize, Martin JT, 1984
#2
12 + 11
| 3748 | FIDE Album (1983-1985) | 1992 |
SOLUTION
- SOUND
- Sets
- 1...Qf4
- 2.Sc4#
- 1...Rxd6
- 2.Sd3#
- 1...Be4
- 2.Rxe4#
- 1...Bd5
- 2.Rxd5#
- 1...Sf4
- 2.Sc4#
- 1...Sxd6
- 2.Sd3#
- 1...Qf4
- Tries
- 1.Rd3?
- threat
- 2.Sd1#
- 1...Be4
- 2.Rxe4#
- 1...Bd5
- 2.Rxd5#
- 1...Qf4
- 2.Sc4#
- 1...Rxd6!
- threat
- 1.Rdd4?
- threat
- 2.Sd3#
- 2.Sc4#
- 1...Sxd6
- 2.Sd3#
- 1...Bd5
- 2.Rxd5#
- 1...Sf4
- 2.Sc4#
- 1...Be4!
- threat
- 1.Rb4?
- threat
- 2.Sa4#
- 1...Rxd6
- 2.Sd3#
- 1...Be4
- 2.Rxe4#
- 1...Bd5
- 2.Rxd5#
- 1...Qf4
- 2.Sc4#
- 1...a4
- 2.Sxa4#
- 1...axb4!
- threat
- 1.Rc4?
- threat
- 2.Sa4#
- 1...Rxd6
- 2.Sd3#
- 1...Be4
- 2.Rxe4#
- 1...Bd5
- 2.Rxd5#
- 1...a4
- 2.Sxa4#
- 1...Qf4!
- threat
- 1.Rad4?
- threat
- 2.Sd3#
- 2.Sc4#
- 1...Sxd6
- 2.Sd3#
- 1...Be4
- 2.Rxe4#
- 1...Sf4
- 2.Sc4#
- 1...Bd5!
- threat
- 1.Qc1?
- threat
- 2.Sc4#
- 1...Sxd6
- 2.Sd3#
- 1...Bd5
- 2.Rxd5#
- 1...Qf4!
- threat
- 1.Qa3?
- threat
- 2.Sd3#
- 1...Be4
- 2.Rxe4#
- 1...Sf4
- 2.Sc4#
- 1...Rxd6!
- threat
- 1.Rd3?
- Keys
- 1.Rd2!
- threat
- 2.Sd1#
- 1...Rxd6
- 2.Sd3#
- 1...Be4
- 2.Rxe4#
- 1...Bd5
- 2.Rxd5#
- 1...Qf4
- 2.Sc4#
- threat
- 1.Rd2!
This is a version of 125336
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 2
- Sets
- Q(b);SBLOCK::QAB(A)+S(C),DCHECK
- R(f);SBLOCK,XP(J)::QAB(A)+S(C),DCHECK
- B(k);N_GUARD::R1(G),XB(k)
- B(k);N_GUARD::R1(B),XB(k)
- S(g);SBLOCK::QAB(A)+S(C),DCHECK
- S(j);SBLOCK,XP(J)::QAB(A)+S(C),DCHECK
- Tries
- Try
- R(B);
- Threat
- QAB(A)+S(C)
- Vars
- B(k);N_GUARD::R1(G),XB(k)
- B(k);N_GUARD::R1(B),XB(k)
- Q(b);SBLOCK::QAB(A)+S(C),DCHECK
- Refutation
- R(f);XP(J)
- Try
- R(B);
- Threat
- DUALS(2)
- Vars
- S(j);XP(J)::S(C)
- B(k);N_GUARD::R1(B),XB(k)
- S(g);::S(C)
- Refutation
- B(k);
- Try
- R(G);
- Threat
- QAB(A)+S(C)
- Vars
- R(f);SBLOCK,XP(J)::QAB(A)+S(C),DCHECK
- B(k);N_GUARD::R1(G),XB(k)
- B(k);N_GUARD::R1(B),XB(k)
- Q(b);SBLOCK::QAB(A)+S(C),DCHECK
- P(d);::QAB(A)+S(C),XP(d)
- Refutation
- P(d);XR(G)
- Try
- R(G);
- Threat
- QAB(A)+S(C)
- Vars
- R(f);SBLOCK,XP(J)::QAB(A)+S(C),DCHECK
- B(k);N_GUARD::R1(G),XB(k)
- B(k);N_GUARD::R1(B),XB(k)
- P(d);::QAB(A)+S(C),XP(d)
- Refutation
- Q(b);
- Try
- R(G);
- Threat
- DUALS(2)
- Vars
- S(j);XP(J)::S(C)
- B(k);N_GUARD::R1(G),XB(k)
- S(g);::S(C)
- Refutation
- B(k);
- Try
- Q(A);
- Threat
- S(C)
- Vars
- S(j);SBLOCK,XP(J)::S(C)
- B(k);N_GUARD::R1(B),XB(k)
- Refutation
- Q(b);
- Try
- Q(A);
- Threat
- S(C)
- Vars
- B(k);N_GUARD::R1(G),XB(k)
- S(g);SBLOCK::S(C)
- Refutation
- R(f);XP(J)
- Try
- Actual
- R(B);
- Threat
- QAB(A)+S(C)
- Vars
- R(f);SBLOCK,XP(J)::QAB(A)+S(C),DCHECK
- B(k);N_GUARD::R1(G),XB(k)
- B(k);N_GUARD::R1(B),XB(k)
- Q(b);SBLOCK::QAB(A)+S(C),DCHECK
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