MESON Chess Problem Database
Problem Display
PID: 102379 (2n2RB1/3p4/N5R1/3NkPp1/q3p3/3p4/p2B2K1/b5Q1 w - - 0 1)
Boyer, Jean-Pierre
Les Echecs Francais, 1983
#2
9 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qd4
- 2.Qh2#
- 1...Qxa6
- 2.Qxa1#
- 1...Bd4
- 2.Qh2#
- 1...g4
- 2.Bf4#
- 1...Qd4
- Tries
- 1.Sf6?
- threat
- 2.Sg4#
- 1...Kxf5
- 2.Rxg5#
- 1...Kd6
- 2.Qc5#
- 1...Qd1
- 2.Sxd7#
- 1...g4
- 2.Sxg4#
- 1...e3!
- threat
- 1.Bc3+?
- 1...Qd4
- 2.Qh2#
- 2.Qxd4#
- 1...Bxc3!
- 1...Qd4
- 1.Be3?
- threat
- 2.Qh2#
- 1...g4
- 2.Bf4#
- 1...Qc2+!
- threat
- 1.Re6+?
- 1...Kxd5
- 2.Qc5#
- 1...dxe6!
- 1...Kxd5
- 1.Re8+?
- 1...Kxf5
- 2.Rxg5#
- 1...Se7!
- 1...Kxf5
- 1.Sf6?
- Keys
- 1.Se3!
- threat
- 2.Sg4#
- 1...Kd4
- 2.Qxa1#
- 1...Kf4
- 2.Qh2#
- 1...Qd1
- 2.Sc4#
- 1...g4
- 2.Sxg4#
- threat
- 1.Se3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 3
- REMOVED MATES = 3
- Sets
- Q(d);SBLOCK::QAB(A)
- Q(d);N_GUARD,XS(F)::QAB(A),XB(a)
- B(a);SBLOCK::QAB(A)
- P(g);N_GUARD::B(B)
- Tries
- Try
- S(D);
- Threat
- S(D)
- Vars
- K(f);OGATEB,P-FLIGHT,XP(E)::R1(G),XP(g)
- K(f);S_FLIGHT::QAB1(A)
- Q(d);N_GUARD::S(D),XP(h)
- P(g);::S(D),XP(g)
- Refutation
- P(e);
- Try
- B(B);CHECK
- Refutation
- B(a);XB(B)
- Try
- B(B);
- Threat
- QAB(A)
- Vars
- P(g);N_GUARD::B(B)
- Refutation
- Q(d);CHECK
- Try
- R(G);CHECK
- Vars
- K(f);P-FLIGHT,XS(D)::QAR1(A)
- Refutation
- P(h);XR(G)
- Try
- R(H);CHECK
- Vars
- K(f);P-FLIGHT,XP(E)::R1(G),XP(g)
- Refutation
- S(i);P_SPINS(i)
- Try
- Actual
- S(D);
- Threat
- S(D)
- Vars
- K(f);S_FLIGHT::QAB(A),XB(a)
- K(f);S_FLIGHT::QAB(A)
- Q(d);N_GUARD::S(D)
- P(g);::S(D),XP(g)
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