MESON Chess Problem Database
Problem Display
PID: 15850 (5BK1/3B1P2/4rknR/1QNR2p1/5P2/2p5/3b3N/1b1qn3 w - - 0 1)
Hoffmann, Fritz
Phenix, 1988
#2
10 + 9
SOLUTION
- SOUND
- Sets
- 1...Qc2
- 2.Sg4#
- 1...Qb3
- 2.Sg4#
- 1...Qa4
- 2.Sg4#
- 1...Qg4
- 2.Sxg4#
- 1...Qc1
- 2.Sg4#
- 1...Re2
- 2.Sg4#
- 1...Re3
- 2.fxg5#
- 1...Re4
- 2.Rf5#
- 1...Re5
- 2.fxe5#
- 1...Ra6
- 2.Qxa6#
- 1...Rb6
- 2.Qxb6#
- 1...Rc6
- 2.Qxc6#
- 1...Rd6
- 2.Rxd6#
- 1...Re7
- 2.Bg7#
- 1...Re8
- 2.fxe8S#
- 1...Sf3
- 2.Sg4#
- 1...Qc2
- Tries
- 1.Sd3?
- threat
- 2.Rf5#
- 1...Qg4
- 2.Sxg4#
- 1...Re5
- 2.fxe5#
- 1...Bxd3!
- threat
- 1.Se4+?
- 1...Rxe4
- 2.Rf5#
- 1...Bxe4!
- 1...Rxe4
- 1.Bd6?
- threat
- 2.f8Q#
- 2.f8R#
- 1...Re8+
- 2.fxe8S#
- 1...Bxf4
- 2.f8Q#
- 2.f8R#
- 1...gxf4
- 2.f8Q#
- 2.f8R#
- 1...Re4
- 2.Rf5#
- 2.f8Q#
- 2.f8R#
- 1...Qc2
- 2.Sg4#
- 2.f8Q#
- 2.f8R#
- 1...Qe2
- 2.f8Q#
- 2.f8R#
- 1...Qb3
- 2.Sg4#
- 2.f8Q#
- 2.f8R#
- 1...Qf3
- 2.f8Q#
- 2.f8R#
- 1...Qa4
- 2.Sg4#
- 2.f8Q#
- 2.f8R#
- 1...Qg4
- 2.Sxg4#
- 2.f8Q#
- 2.f8R#
- 1...Qh5
- 2.f8Q#
- 2.f8R#
- 1...Qc1
- 2.Sg4#
- 2.f8Q#
- 2.f8R#
- 1...Re2
- 2.Sg4#
- 2.f8Q#
- 2.f8R#
- 1...Re3
- 2.fxg5#
- 2.f8Q#
- 2.f8R#
- 1...Re5
- 2.fxe5#
- 2.f8Q#
- 2.f8R#
- 1...Ba2
- 2.f8Q#
- 2.f8R#
- 1...Bc2
- 2.f8Q#
- 2.f8R#
- 1...Bd3
- 2.f8Q#
- 2.f8R#
- 1...Be4
- 2.f8Q#
- 2.f8R#
- 1...Bf5
- 2.f8Q#
- 2.f8R#
- 1...Bc1
- 2.f8Q#
- 2.f8R#
- 1...Be3
- 2.f8Q#
- 2.f8R#
- 1...Sc2
- 2.f8Q#
- 2.f8R#
- 1...Sg2
- 2.f8Q#
- 2.f8R#
- 1...Sd3
- 2.f8Q#
- 2.f8R#
- 1...Sf3
- 2.Sg4#
- 2.f8Q#
- 2.f8R#
- 1...c2
- 2.f8Q#
- 2.f8R#
- 1...g4
- 2.f8Q#
- 2.f8R#
- 1...Re7!
- threat
- 1.Sd3?
- Keys
- 1.Bc8!
- threat
- 2.Sd7#
- 1...Re2
- 2.Sg4#
- 1...Re3
- 2.fxg5#
- 1...Re4
- 2.Rf5#
- 1...Re5
- 2.fxe5#
- 1...Ra6
- 2.Qxa6#
- 1...Rb6
- 2.Qxb6#
- 1...Rc6
- 2.Qxc6#
- 1...Rd6
- 2.Rxd6#
- 1...Re7
- 2.Bg7#
- 1...Re8
- 2.fxe8S#
- threat
- 1.Bc8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 6
- Sets
- Q(b);N_GUARD::S(A)
- Q(b);N_GUARD::S(A),XQ(b)
- R(g);S_CUTQ(b)::S(A)
- R(g);S_CUTB(d)::P(B),XP(f)
- R(g);S_CUTB(a)::R1(E)
- R(g);OGATE::P(B),XR(g)
- R(g);OGATEB::QAR(C),XR(g)
- R(g);OGATEB::R(E),XR(g)
- R(g);SBLOCK::B(I)
- R(g);OGATE,P_PINB(I)::PXR(g)=S
- S(c);S_CUTQ(b)::S(A)
- Tries
- Try
- S(D);
- Threat
- R1(E)
- Vars
- Q(b);N_GUARD::S(A),XQ(b)
- R(g);OGATE::P(B),XR(g)
- Refutation
- B(a);XS(D)
- Try
- S(D);CHECK
- Vars
- R(g);XS(D)::R1(E)
- Refutation
- B(a);XS(D)
- Try
- B(I);
- Threat
- P=Q
- Vars
- R(g);CHECK,OGATE::PXR(g)=S
- B(d);XP(B)::P=Q
- P(f);XP(B)::P=Q
- Q(b);::P=Q
- B(a);::P=Q
- B(d);::P=Q
- S(c);::P=Q
- P(e);::P=Q
- P(f);::P=Q
- Refutation
- R(g);
- Try
- Actual
- B(G);
- Threat
- S(D)
- Vars
- R(g);S_CUTQ(b)::S(A)
- R(g);S_CUTB(d)::P(B),XP(f)
- R(g);S_CUTB(a)::R1(E)
- R(g);OGATE::P(B),XR(g)
- R(g);OGATEB::QAR(C),XR(g)
- R(g);OGATEB::R(E),XR(g)
- R(g);SBLOCK::B(I)
- R(g);OGATE,P_PINB(I)::PXR(g)=S
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