MESON Chess Problem Database
Problem Display
PID: 45252 (6K1/B2N2Qp/n1ppp3/3k3r/7p/1PR5/6P1/bB3Nq1 w - - 0 1)
Biscay, Pierre
1st Prize, American Chess Bulletin, 1958
#2
9 + 10
| 3976 | FIDE Album (1956-1958) | 1961 |
SOLUTION
- SOUND
- Sets
- 1...Qh2
- 2.Se3#
- 2.Sb6#
- 2.Qd4#
- 1...Qe3
- 2.Sxe3#
- 1...Qd4
- 2.Qxd4#
- 1...Qb6
- 2.Sxb6#
- 1...Qxf1
- 2.Sb6#
- 2.Qd4#
- 1...Qh1
- 2.Se3#
- 2.Sb6#
- 2.Qd4#
- 1...Qxg2
- 2.Se3#
- 2.Sb6#
- 2.Qxg2#
- 1...Re5
- 2.Sf6#
- 1...Sc5
- 2.Sb6#
- 1...e5
- 2.Qf7#
- 1...Qh2
- Tries
- 1.Sd2?
- threat
- 2.Be4#
- 1...Qxb1
- 2.Sb6#
- 2.Qd4#
- 1...Qxg2
- 2.Sb6#
- 2.Qxg2#
- 1...e5
- 2.Qf7#
- 1...Qd4
- 2.Qxd4#
- 1...Qe1
- 2.Sb6#
- 2.Qd4#
- 1...Re5
- 2.Sf6#
- 1...Sc5
- 2.Sb6#
- 1...Qe3!
- threat
- 1.Bxg1?
- threat
- 2.Se3#
- 2.Sb6#
- 2.Qd4#
- 1...Bxc3
- 2.Se3#
- 2.Sb6#
- 1...e5
- 2.Qf7#
- 1...Re5
- 2.Sb6#
- 2.Sf6#
- 1...Rg5
- 2.Se3#
- 2.Sb6#
- 1...c5!
- threat
- 1.Be3?
- threat
- 2.Sb6#
- 2.Qd4#
- 1...Qxe3
- 2.Sxe3#
- 1...Qxg2
- 2.Sb6#
- 2.Qxg2#
- 1...Bxc3
- 2.Sb6#
- 1...e5
- 2.Qf7#
- 1...Re5
- 2.Sb6#
- 2.Sf6#
- 1...Rg5
- 2.Sb6#
- 1...c5!
- threat
- 1.Qe5+?
- 1...Rxe5
- 2.Sf6#
- 1...dxe5!
- 1...Rxe5
- 1.Qg4?
- threat
- 2.Be4#
- 2.Qf3#
- 2.Qc4#
- 2.Qe4#
- 1...Qxa7
- 2.Qc4#
- 2.Qe4#
- 1...Qxf1
- 2.Be4#
- 2.Qd4#
- 2.Qe4#
- 1...Qxg2
- 2.Se3#
- 2.Qxg2#
- 1...c5
- 2.Qe4#
- 1...Qe3
- 2.Sxe3#
- 2.Qc4#
- 1...Qf2
- 2.Be4#
- 2.Qc4#
- 2.Qe4#
- 1...Qd4
- 2.Qxd4#
- 1...Qc5
- 2.Qe4#
- 1...Qb6
- 2.Qc4#
- 2.Qe4#
- 1...Re5
- 2.Sf6#
- 2.Qc4#
- 1...Rf5
- 2.Be4#
- 2.Qc4#
- 2.Qe4#
- 1...Sc5
- 2.Qc4#
- 1...e5
- 2.Sf6#
- 2.Be4#
- 2.Qc4#
- 1...Rg5+!
- threat
- 1.Sd2?
- Keys
- 1.Re3!
- threat
- 2.Be4#
- 1...Qxe3
- 2.Sxe3#
- 1...Qxg2
- 2.Qxg2#
- 1...e5
- 2.Qf7#
- 1...Re5
- 2.Sf6#
- 1...Sc5
- 2.Sb6#
- threat
- 1.Re3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 2
- Sets
- Q(b);N_GUARD::S(B),XQ(b)
- Q(b);N_GUARD::QAR1(H),XQ(b)
- Q(b);N_GUARD::S(G),XQ(b)
- R(e);SBLOCK::S(G)
- S(f);S_CUTQ(b)::S(G)
- P(i);OGATEB::QAB(H)
- Tries
- Try
- S(B);
- Threat
- B(A)
- Vars
- P(i);OGATEB::QAB(H)
- Q(b);N_GUARD::QAR1(H),XQ(b)
- R(e);SBLOCK::S(G)
- S(f);S_CUTQ(b)::S(G)
- Refutation
- Q(b);
- Try
- B(F);XQ(b)
- Threat
- DUALS(3)
- Vars
- P(i);OGATEB::QAB(H)
- Refutation
- P(g);
- Try
- B(F);
- Threat
- DUALS(2)
- Vars
- Q(b);XB(F)::S(B),XQ(b)
- B(a);XR(E)::S(G)
- P(i);OGATEB::QAB(H)
- R(e);P_PINQ(H)::S(G)
- Refutation
- P(g);
- Try
- Q(H);CHECK,P_SPINP(C)
- Vars
- R(e);SBLOCK,XQ(H)::S(G)
- Refutation
- P(h);XQ(H)
- Try
- Q(H);
- Threat
- DUALS(4)
- Vars
- P(g);::QAB1(H)
- Q(b);N_GUARD::QAR1(H),XQ(b)
- Q(b);::QAB1(H)
- S(f);::QAB1(H)
- Refutation
- R(e);CHECK
- Try
- Actual
- R(E);
- Threat
- B(A)
- Vars
- Q(b);XR(E)::S(B),XQ(b)
- Q(b);OGATE,P_PINQ(H),XP(C)::QAB(H),XQ(b)
- P(i);OGATEB::QAB(H)
- R(e);S_CUTB(a)::S(G)
- S(f);SBLOCK::S(G)
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