MESON Chess Problem Database
Problem Display
PID: 65925 (8/2N5/3n4/2p1r3/2B2R2/B1k1Pb2/2Pn4/1RK3N1 w - - 0 1)
Retter, Yosef
1st Prize, Danish TT, 1988-1989
#2
9 + 6
| 721 | Variantim | 1992 |
| 5454 | Near Snap | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Bh1
- 2.Se2#
- 1...Be2
- 2.Sxe2#
- 1...Bg2
- 2.Se2#
- 1...Bd5
- 2.Se2#
- 1...Bc6
- 2.Se2#
- 1...Bb7
- 2.Se2#
- 1...Ba8
- 2.Se2#
- 1...Sf1
- 2.Rb3#
- 1...Sb3+
- 2.Rxb3#
- 1...S2xc4
- 2.Rb3#
- 1...S6xc4
- 2.Sb5#
- 1...Sb5
- 2.Sxb5#
- 1...Sf5
- 2.Sb5#
- 1...Sb7
- 2.Sb5#
- 1...Sf7
- 2.Sb5#
- 1...Sc8
- 2.Sb5#
- 1...Se8
- 2.Sb5#
- 1...Bh1
- Tries
- 1.Sd5+?
- 1...Bxd5
- 2.Se2#
- 1...Rxd5!
- 1...Bxd5
- 1.Bf1?
- threat
- 2.Bb2#
- 1...Sb3+
- 2.Rxb3#
- 1...Re4
- 2.Sd5#
- 1...S2c4
- 2.Rb3#
- 1...S2e4
- 2.Rb3#
- 1...S6c4
- 2.Sb5#
- 1...S6e4
- 2.Sb5#
- 1...c4
- 2.Bb4#
- 1...Be4!
- threat
- 1.Ba2?
- threat
- 2.Bb2#
- 1...Sb3+
- 2.Rxb3#
- 1...Re4
- 2.Sd5#
- 1...Be4
- 2.Se2#
- 1...S2c4
- 2.Rb3#
- 1...S6c4
- 2.Sb5#
- 1...S6e4
- 2.Sb5#
- 1...c4
- 2.Bb4#
- 1...S2e4!
- threat
- 1.Be2?
- threat
- 2.Bb2#
- 1...Sb3+
- 2.Rxb3#
- 1...Re4
- 2.Sd5#
- 1...S2c4
- 2.Rb3#
- 1...S2e4
- 2.Rb3#
- 1...S6c4
- 2.Sb5#
- 1...S6e4
- 2.Sb5#
- 1...c4
- 2.Bb4#
- 1...Be4!
- threat
- 1.Bd5?
- threat
- 2.Bb2#
- 1...Sb3+
- 2.Rxb3#
- 1...Be4
- 2.Se2#
- 1...S2c4
- 2.Rb3#
- 1...S2e4
- 2.Rb3#
- 1...S6c4
- 2.Sb5#
- 1...S6e4
- 2.Sb5#
- 1...c4
- 2.Bb4#
- 1...Re4!
- threat
- 1.Ba6?
- threat
- 2.Bb2#
- 1...Sb3+
- 2.Rxb3#
- 1...Be4
- 2.Se2#
- 1...Re4
- 2.Sd5#
- 1...S2c4
- 2.Rb3#
- 1...S2e4
- 2.Rb3#
- 1...S6c4
- 2.Sb5#
- 1...c4
- 2.Bb4#
- 1...S6e4!
- threat
- 1.Be6?
- threat
- 2.Bb2#
- 1...Sb3+
- 2.Rxb3#
- 1...Be4
- 2.Se2#
- 1...S2c4
- 2.Rb3#
- 1...S2e4
- 2.Rb3#
- 1...S6c4
- 2.Sb5#
- 1...S6e4
- 2.Sb5#
- 1...c4
- 2.Bb4#
- 1...Re4!
- threat
- 1.Bf7?
- threat
- 2.Bb2#
- 1...Sb3+
- 2.Rxb3#
- 1...Be4
- 2.Se2#
- 1...S2c4
- 2.Rb3#
- 1...S2e4
- 2.Rb3#
- 1...S6c4
- 2.Sb5#
- 1...S6e4
- 2.Sb5#
- 1...c4
- 2.Bb4#
- 1...Re4!
- threat
- 1.Bg8?
- threat
- 2.Bb2#
- 1...Sb3+
- 2.Rxb3#
- 1...Be4
- 2.Se2#
- 1...S2c4
- 2.Rb3#
- 1...S2e4
- 2.Rb3#
- 1...S6c4
- 2.Sb5#
- 1...S6e4
- 2.Sb5#
- 1...c4
- 2.Bb4#
- 1...Re4!
- threat
- 1.Sd5+?
- Keys
- 1.Bd3!
- threat
- 2.Bb2#
- 1...Sb3+
- 2.Rxb3#
- 1...Be4
- 2.Se2#
- 1...Re4
- 2.Sd5#
- 1...S2c4
- 2.Rb3#
- 1...S2e4
- 2.Rb3#
- 1...S6c4
- 2.Sb5#
- 1...S6e4
- 2.Sb5#
- 1...c4
- 2.Bb4#
- threat
- 1.Bd3!
Anticipated by 266450(1950)
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 14
- Sets
- B(c);N_GUARD::S(C)
- B(c);N_GUARD::S(C),XB(c)
- S(a);N_GUARD::R1(A)
- S(a);CHECK,N_GUARD::R1(A),XS(a)
- S(a);N_GUARD,XB(G)::R1(A)
- S(f);N_GUARD,XB(G)::S(I)
- S(f);N_GUARD::S(I),XS(f)
- S(f);N_GUARD::S(I)
- Tries
- Try
- S(I);CHECK
- Vars
- B(c);XS(I)::S(C)
- Refutation
- R(e);XS(I)
- Try
- B(G);
- Threat
- B(E)
- Vars
- S(a);CHECK,N_GUARD::R1(A),XS(a)
- R(e);N_GUARD,S_CUTB(c)::S(I)
- S(a);N_GUARD::R1(A)
- S(f);N_GUARD::S(I)
- P(d);N_GUARD::B(E)
- Refutation
- B(c);
- Try
- B(G);
- Threat
- B(E)
- Vars
- S(a);CHECK,N_GUARD::R1(A),XS(a)
- R(e);N_GUARD,S_CUTB(c)::S(I)
- B(c);N_GUARD::S(C)
- S(a);N_GUARD::R1(A)
- S(f);N_GUARD::S(I)
- P(d);N_GUARD::B(E)
- Refutation
- S(a);
- Try
- B(G);
- Threat
- B(E)
- Vars
- S(a);CHECK,N_GUARD::R1(A),XS(a)
- R(e);N_GUARD,S_CUTB(c)::S(I)
- S(a);N_GUARD::R1(A)
- S(f);N_GUARD::S(I)
- P(d);N_GUARD::B(E)
- Refutation
- B(c);
- Try
- B(G);
- Threat
- B(E)
- Vars
- S(a);CHECK,N_GUARD::R1(A),XS(a)
- B(c);N_GUARD::S(C)
- S(a);N_GUARD::R1(A)
- S(f);N_GUARD::S(I)
- P(d);N_GUARD::B(E)
- Refutation
- R(e);
- Try
- B(G);
- Threat
- B(E)
- Vars
- S(a);CHECK,N_GUARD::R1(A),XS(a)
- B(c);N_GUARD::S(C)
- R(e);N_GUARD,S_CUTB(c)::S(I)
- S(a);N_GUARD::R1(A)
- S(f);N_GUARD::S(I)
- P(d);N_GUARD::B(E)
- Refutation
- S(f);
- Try
- B(G);
- Threat
- B(E)
- Vars
- S(a);CHECK,N_GUARD::R1(A),XS(a)
- B(c);N_GUARD::S(C)
- S(a);N_GUARD::R1(A)
- S(f);N_GUARD::S(I)
- P(d);N_GUARD::B(E)
- Refutation
- R(e);
- Try
- B(G);
- Threat
- B(E)
- Vars
- S(a);CHECK,N_GUARD::R1(A),XS(a)
- B(c);N_GUARD::S(C)
- S(a);N_GUARD::R1(A)
- S(f);N_GUARD::S(I)
- P(d);N_GUARD::B(E)
- Refutation
- R(e);
- Try
- B(G);
- Threat
- B(E)
- Vars
- S(a);CHECK,N_GUARD::R1(A),XS(a)
- B(c);N_GUARD::S(C)
- S(a);N_GUARD::R1(A)
- S(f);N_GUARD::S(I)
- P(d);N_GUARD::B(E)
- Refutation
- R(e);
- Try
- Actual
- B(G);
- Threat
- B(E)
- Vars
- S(a);CHECK,N_GUARD::R1(A),XS(a)
- B(c);N_GUARD::S(C)
- R(e);N_GUARD,S_CUTB(c)::S(I)
- S(a);N_GUARD::R1(A)
- S(f);N_GUARD::S(I)
- P(d);N_GUARD::B(E)
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