MESON Chess Problem Database
Problem Display
PID: 804 (K7/5n2/1pB1p3/p2R4/P1k3N1/7Q/N1b1P3/1n4B1 w - - 0 1)
Grevatt, James G
2nd Prize, British Chess Magazine, 1963
#2
9 + 7
| 3174 | The Two-move Chess Problem Tradition and Development | 1966 |
| 136 | Problem Observer | 2011 |
| 15652 | Tehtavaniekka | 2012 |
SOLUTION
- SOUND
- Sets
- 1...Bd1
- 2.Qd3#
- 1...Bb3
- 2.Se3#
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Bxa4
- 2.Qd3#
- 1...Sd2
- 2.Qc3#
- 1...Sa3
- 2.Qc3#
- 1...Sc3
- 2.Qxc3#
- 1...Se5
- 2.Sxe5#
- 1...Sg5
- 2.Se5#
- 1...Sd6
- 2.Se5#
- 1...Sh6
- 2.Se5#
- 1...Sd8
- 2.Se5#
- 1...Sh8
- 2.Se5#
- 1...b5
- 2.Rc5#
- 1...exd5
- 2.Bb5#
- 1...Bd1
- Tries
- 1.Sf6?
- threat
- 2.Bb5#
- 1...Bxa4
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Sc3
- 2.Qxc3#
- 1...Sa3
- 2.Qc3#
- 1...b5
- 2.Bxb5#
- 2.Rc5#
- 1...Sd6!
- threat
- 1.Bxb6?
- threat
- 2.Rd4#
- 1...exd5
- 2.Bb5#
- 1...Bd3
- 2.Qxd3#
- 1...Sc3
- 2.Qxc3#
- 1...e5!
- threat
- 1.Rd1?
- threat
- 2.Bb5#
- 1...Bxd1
- 2.Qd3#
- 1...Bxa4
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Sc3
- 2.Qxc3#
- 1...Sd2
- 2.Qc3#
- 1...Sa3
- 2.Qc3#
- 1...Sd6
- 2.Se5#
- 1...b5
- 2.Bxb5#
- 1...Be4!
- threat
- 1.Rd2?
- threat
- 2.Bb5#
- 1...Bxa4
- 2.Qd3#
- 1...Sxd2
- 2.Qc3#
- 1...Bd3
- 2.Qxd3#
- 1...Sc3
- 2.Qxc3#
- 1...Sa3
- 2.Qc3#
- 1...Sd6
- 2.Se5#
- 1...b5
- 2.Bxb5#
- 1...Be4!
- threat
- 1.Rd3?
- threat
- 2.Bb5#
- 1...Bxd3
- 2.Qxd3#
- 1...Sc3
- 2.Rxc3#
- 1...Sa3
- 2.Rc3#
- 1...Sd6
- 2.Se5#
- 1...b5
- 2.Bxb5#
- 1...Bxa4!
- threat
- 1.Re5?
- threat
- 2.Bb5#
- 1...Bxa4
- 2.Re4#
- 2.Qd3#
- 1...Sxe5
- 2.Sxe5#
- 1...Bd3
- 2.Qxd3#
- 1...Sc3
- 2.Qxc3#
- 1...Be4
- 2.Rxe4#
- 1...Sa3
- 2.Qc3#
- 1...b5
- 2.Bxb5#
- 2.Rc5#
- 1...Sd6!
- threat
- 1.Rd6?
- threat
- 2.Bb5#
- 1...Bxa4
- 2.Qd3#
- 1...Sxd6
- 2.Se5#
- 1...Bd3
- 2.Qxd3#
- 1...Sc3
- 2.Qxc3#
- 1...Sa3
- 2.Qc3#
- 1...b5
- 2.Bxb5#
- 1...Be4!
- threat
- 1.Rd7?
- threat
- 2.Bb5#
- 1...Bxa4
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Sc3
- 2.Qxc3#
- 1...Sa3
- 2.Qc3#
- 1...Sd6
- 2.Se5#
- 1...b5
- 2.Bxb5#
- 1...Be4!
- threat
- 1.Rd8?
- threat
- 2.Bb5#
- 1...Bxa4
- 2.Qd3#
- 1...Sxd8
- 2.Se5#
- 1...Bd3
- 2.Qxd3#
- 1...Sc3
- 2.Qxc3#
- 1...Sa3
- 2.Qc3#
- 1...Sd6
- 2.Se5#
- 1...b5
- 2.Bxb5#
- 1...Be4!
- threat
- 1.Qa3?
- threat
- 2.Se3#
- 2.Rd4#
- 1...exd5
- 2.Bb5#
- 1...e5
- 2.Se3#
- 1...Sxa3!
- threat
- 1.Qb3+?
- 1...Bxb3
- 2.Se3#
- 1...Kxb3!
- 1...Bxb3
- 1.Qf3?
- threat
- 2.Bb5#
- 1...Bxa4
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Sc3
- 2.Qxc3#
- 1...Sa3
- 2.Qc3#
- 1...Sd6
- 2.Se5#
- 1...b5
- 2.Bxb5#
- 2.Rc5#
- 1...Be4!
- threat
- 1.e4?
- threat
- 2.Bb5#
- 1...Bxa4
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 1...Sc3
- 2.Qxc3#
- 1...Sa3
- 2.Qc3#
- 1...Sd6
- 2.Se5#
- 1...b5
- 2.Bxb5#
- 2.Rc5#
- 1...Bxe4!
- threat
- 1.Sf6?
- Keys
- 1.Rb5!
- 1...Bxa4
- 2.Qd3#
- 1...Be4
- 2.Qb3#
- 1...Bd1
- 2.Qd3#
- 1...Bb3
- 2.Qxb3#
- 2.Qd3#
- 1...Bd3
- 2.Qxd3#
- 2.exd3#
- 1...Bf5
- 2.Qb3#
- 1...Bg6
- 2.Qb3#
- 1...Bh7
- 2.Qb3#
- 1...Sd2
- 2.Qc3#
- 1...Sa3
- 2.Qc3#
- 1...Sc3
- 2.Qxc3#
- 1...Se5
- 2.Sxe5#
- 1...Sg5
- 2.Se5#
- 1...Sd6
- 2.Se5#
- 1...Sh6
- 2.Se5#
- 1...Sd8
- 2.Se5#
- 1...Sh8
- 2.Se5#
- 1...e5
- 2.Bd5#
- 1...Bxa4
- 1.Rb5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 3
- Sets
- B(b);N_GUARD::QAB1(D)
- B(b);N_GUARD::QAB1(D),XB(b)
- B(b);N_GUARD,XP(E)::QAB1(D)
- S(a);N_GUARD::QAR1(D)
- S(a);N_GUARD::QAR1(D),XS(a)
- S(g);N_GUARD::S(F),XS(g)
- S(g);N_GUARD::S(F)
- P(e);N_GUARD::R1(G)
- P(f);SBLOCK,XR(G)::B(H)
- Tries
- Try
- S(F);
- Threat
- B(H)
- Vars
- B(b);N_GUARD,XP(E)::QAB1(D)
- B(b);N_GUARD::QAB1(D),XB(b)
- S(a);N_GUARD::QAR1(D),XS(a)
- S(a);N_GUARD::QAR1(D)
- Refutation
- S(g);
- Try
- B(A);XP(e)
- Threat
- R1(G)
- Vars
- P(f);SBLOCK,XR(G)::B(H)
- B(b);N_GUARD::QAB1(D),XB(b)
- S(a);N_GUARD::QAR1(D),XS(a)
- Refutation
- P(f);
- Try
- R(G);
- Threat
- B(H)
- Vars
- B(b);N_GUARD,XR(G)::QAB1(D)
- B(b);N_GUARD,XP(E)::QAB1(D)
- B(b);N_GUARD::QAB1(D),XB(b)
- S(a);N_GUARD::QAR1(D),XS(a)
- S(a);N_GUARD::QAR1(D)
- S(g);N_GUARD::S(F)
- P(e);::B(H),XP(e)
- Refutation
- B(b);P_PINB(H)
- Try
- R(G);
- Threat
- B(H)
- Vars
- B(b);N_GUARD,XP(E)::QAB1(D)
- S(a);N_GUARD,XR(G)::QAR1(D)
- B(b);N_GUARD::QAB1(D),XB(b)
- S(a);N_GUARD::QAR1(D),XS(a)
- S(a);N_GUARD::QAR1(D)
- S(g);N_GUARD::S(F)
- P(e);::B(H),XP(e)
- Refutation
- B(b);P_PINB(H)
- Try
- R(G);
- Threat
- B(H)
- Vars
- B(b);OGATE,XR(G)::QAB1(D),XB(b)
- S(a);N_GUARD::R1(G),XS(a)
- S(a);N_GUARD::R1(G)
- S(g);N_GUARD::S(F)
- P(e);::B(H),XP(e)
- Refutation
- B(b);XP(E)
- Try
- R(G);
- Threat
- B(H)
- Vars
- S(g);XR(G)::S(F),XS(g)
- B(b);N_GUARD::QAB1(D),XB(b)
- S(a);N_GUARD::QAR1(D),XS(a)
- B(b);N_GUARD,P_PINB(H)::R(G),XB(b)
- S(a);N_GUARD::QAR1(D)
- Refutation
- S(g);
- Try
- R(G);
- Threat
- B(H)
- Vars
- B(b);N_GUARD,XP(E)::QAB1(D)
- S(g);N_GUARD,XR(G)::S(F)
- B(b);N_GUARD::QAB1(D),XB(b)
- S(a);N_GUARD::QAR1(D),XS(a)
- S(a);N_GUARD::QAR1(D)
- P(e);::B(H),XP(e)
- Refutation
- B(b);P_PINB(H)
- Try
- R(G);
- Threat
- B(H)
- Vars
- B(b);N_GUARD,XP(E)::QAB1(D)
- B(b);N_GUARD::QAB1(D),XB(b)
- S(a);N_GUARD::QAR1(D),XS(a)
- S(a);N_GUARD::QAR1(D)
- S(g);N_GUARD::S(F)
- P(e);::B(H),XP(e)
- Refutation
- B(b);P_PINB(H)
- Try
- R(G);
- Threat
- B(H)
- Vars
- B(b);N_GUARD,XP(E)::QAB1(D)
- S(g);N_GUARD,XR(G)::S(F)
- B(b);N_GUARD::QAB1(D),XB(b)
- S(a);N_GUARD::QAR1(D),XS(a)
- S(a);N_GUARD::QAR1(D)
- S(g);N_GUARD::S(F)
- P(e);::B(H),XP(e)
- Refutation
- B(b);P_PINB(H)
- Try
- Q(D);
- Threat
- DUALS(2)
- Vars
- P(f);SBLOCK,XR(G)::B(H)
- P(f);::S(F)
- Refutation
- S(a);XQ(D)
- Try
- Q(D);CHECK
- Vars
- B(b);SBLOCK,XQ(D)::S(F)
- Refutation
- K(c);S_FLIGHT,XQ(D)
- Try
- Q(D);
- Threat
- B(H)
- Vars
- B(b);N_GUARD,XP(E)::QAB1(D)
- B(b);N_GUARD::QAB1(D),XB(b)
- S(a);N_GUARD::QAR1(D),XS(a)
- S(a);N_GUARD::QAR1(D)
- S(g);N_GUARD::S(F)
- Refutation
- B(b);
- Try
- P(C);
- Threat
- B(H)
- Vars
- B(b);N_GUARD,XP(E)::QAB1(D)
- B(b);N_GUARD::QAB1(D),XB(b)
- S(a);N_GUARD::QAR1(D),XS(a)
- S(a);N_GUARD::QAR1(D)
- S(g);N_GUARD::S(F)
- Refutation
- B(b);XP(C)
- Try
- Actual
- R(G);
- Vars
- B(b);N_GUARD,XP(E)::QAB1(D)
- B(b);N_GUARD,P_PINB(H)::QAB1(D)
- B(b);N_GUARD::QAB1(D)
- S(a);N_GUARD::QAR1(D)
- S(a);N_GUARD::QAR1(D),XS(a)
- S(g);N_GUARD::S(F),XS(g)
- S(g);N_GUARD::S(F)
- P(f);N_GUARD::B(H)
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