MESON Chess Problem Database
Problem Display
PID: 149408 (8/3R1N2/4P1p1/3q1B2/pn1kNp2/1pR5/5PQ1/1K2B1n1 w - - 0 1)
Doukhan, Gerard
1st Prize, De Waarheid, 1983
#2
10 + 8
| 56 | The Problemist | 2012 |
SOLUTION
- SOUND
- Tries
- 1.Sd2?
- threat
- 2.Rc4#
- 1...gxf5
- 2.Qg7#
- 1...Kxc3!
- threat
- 1.Sg3?
- threat
- 2.Qe4#
- 1...gxf5
- 2.Sxf5#
- 1...Sf3
- 2.Se2#
- 1...f3!
- threat
- 1.Sc5?
- threat
- 2.Qe4#
- 1...gxf5
- 2.Qg7#
- 1...f3
- 2.Qg4#
- 1...Sf3!
- threat
- 1.Seg5?
- threat
- 2.Qe4#
- 1...Sf3
- 2.Sxf3#
- 1...f3
- 2.Qg4#
- 1...gxf5!
- threat
- 1.Qf1?
- threat
- 2.Rc4#
- 2.Qc4#
- 1...Qxd7
- 2.Qc4#
- 1...Qd6
- 2.Qc4#
- 1...Sd3
- 2.Qxd3#
- 1...Se2!
- threat
- 1.Sd2?
- Keys
- 1.Sed6!
- threat
- 2.Sb5#
- 1...Qe4+
- 2.Qxe4#
- 1...Qxf5+
- 2.Sxf5#
- 1...Qxd6
- 2.Qe4#
- 1...Qc4
- 2.Rxc4#
- 1...Qb5
- 2.Sxb5#
- 2.Qe4#
- threat
- 1.Sed6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 0
- Sets
- Tries
- Try
- S(F);
- Threat
- R1(E)
- Vars
- P(h);OGATE,XB(G)::QAB(D)
- Refutation
- K(e);N_SPINQ(g),S_FLIGHT,XR(E)
- Try
- S(F);
- Threat
- QAR1(D)
- Vars
- P(h);XB(G)::S(F),XP(h)
- S(a);N_GUARD::S(F)
- Refutation
- P(f);
- Try
- S(F);
- Threat
- QAR1(D)
- Vars
- P(h);OGATE,XB(G)::QAB(D)
- P(f);OGATEB::QAR(D)
- Refutation
- S(a);
- Try
- S(F);
- Threat
- QAR1(D)
- Vars
- S(a);N_GUARD::S(F),XS(a)
- P(f);OGATEB::QAR(D)
- Refutation
- P(h);XB(G)
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- Q(g);N_SPINQ(g),XR(I)::QAR1(D)
- Q(g);::QAR1(D)
- S(d);N_GUARD::QAR1(D),XS(d)
- Refutation
- S(a);
- Try
- Actual
- S(F);N_PINQ(g)
- Threat
- S(F)
- Vars
- Q(g);CHECK,N_GUARD::QAR1(D),XQ(g)
- Q(g);CHECK,XB(G)::R(I)+S(F),DCHECK,XQ(g)
- Q(g);N_GUARD,P_SPINQ(g),XS(F)::QAR1(D)
- Q(g);N_GUARD::R1(E),XQ(g)
Developed and maintained by Brian Stephenson.
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