MESON Chess Problem Database
Problem Display
PID: 188389 (8/3Npp2/p1p1Pp2/pbPk2Pp/P6R/1nPp4/3P2N1/3KR3 w - - 0 1)
Ahlheim, Karl-Heinz
Schweizerische Schachzeitung, 1969
#2
11 + 11
SOLUTION
- SOUND
- Sets
- 1...Bxa4
- 2.c4#
- 1...Bc4
- 2.Sf4#
- 1...Sa1
- 2.Rd4#
- 1...Sc1
- 2.Rd4#
- 1...Sxd2
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Sxc5
- 2.Rd4#
- 1...fxg5
- 2.Re5#
- 1...f5
- 2.Re5#
- 1...fxe6
- 2.Se3#
- 1...Bxa4
- Tries
- 1.Re2?
- 1...Bxa4
- 2.c4#
- 1...Sxd2
- 2.Rd4#
- 1...Sxc5
- 2.Rd4#
- 1...fxg5
- 2.Re5#
- 1...fxe6
- 2.Se3#
- 1...Sd4
- 2.Rxd4#
- 1...Bc4
- 2.Sf4#
- 1...Sa1
- 2.Rd4#
- 1...Sc1
- 2.Rd4#
- 1...f5
- 2.Re5#
- 1...dxe2+!
- 1...Bxa4
- 1.Re3?
- 1...Bxa4
- 2.c4#
- 1...Sxd2
- 2.Rd4#
- 1...Sxc5
- 2.Rd4#
- 1...fxg5
- 2.Re5#
- 1...Sd4
- 2.Rxd4#
- 1...Bc4
- 2.Sf4#
- 1...Sa1
- 2.Rd4#
- 1...Sc1
- 2.Rd4#
- 1...f5
- 2.Re5#
- 1...fxe6!
- 1...Bxa4
- 1.Rb4?
- threat
- 2.Sf4#
- 1...Sxc5
- 2.Rd4#
- 1...fxg5
- 2.Re5#
- 1...axb4!
- threat
- 1.Rhe4?
- threat
- 2.Sf4#
- 1...Sxc5
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...fxg5!
- threat
- 1.Rf4?
- 1...Bxa4
- 2.c4#
- 1...Sxd2
- 2.Rd4#
- 1...Sxc5
- 2.Rd4#
- 1...fxg5
- 2.Re5#
- 1...fxe6
- 2.Se3#
- 1...Sd4
- 2.Rxd4#
- 1...Bc4
- 2.Rf5#
- 1...Sa1
- 2.Rd4#
- 1...Sc1
- 2.Rd4#
- 1...f5
- 2.Re5#
- 1...h4!
- 1...Bxa4
- 1.gxf6?
- threat
- 2.Re5#
- 1...Sxc5
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...exf6!
- threat
- 1.g6?
- 1...Bxa4
- 2.c4#
- 1...Sxd2
- 2.Rd4#
- 1...Sxc5
- 2.Rd4#
- 1...fxe6
- 2.Se3#
- 1...Sd4
- 2.Rxd4#
- 1...Bc4
- 2.Sf4#
- 1...Sa1
- 2.Rd4#
- 1...Sc1
- 2.Rd4#
- 1...f5
- 2.Re5#
- 1...fxg6!
- 1...Bxa4
- 1.exf7?
- 1...Bxa4
- 2.c4#
- 1...Sxd2
- 2.Rd4#
- 1...Sxc5
- 2.Rd4#
- 1...fxg5
- 2.Re5#
- 1...Sd4
- 2.Rxd4#
- 1...Bc4
- 2.Sf4#
- 1...Sa1
- 2.Rd4#
- 1...Sc1
- 2.Rd4#
- 1...f5
- 2.Re5#
- 1...e6
- 2.Se3#
- 1...e5!
- 1...Bxa4
- 1.Re2?
- Keys
- 1.Rc4!
- threat
- 2.Sb6#
- 1...Kxc4
- 2.Se3#
- 1...Bxc4
- 2.Sf4#
- 1...Sxc5
- 2.Rd4#
- threat
- 1.Rc4!
This is a version of 188283
FEATURES
- Static
- TYPE = BLOCK_THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 8
- Sets
- B(d);N_GUARD,XP(F)::P(E)
- B(d);SBLOCK::S(D)
- S(a);N_GUARD::R1(G)
- S(a);N_GUARD,XP(C)::R1(G)
- S(a);N_GUARD::R1(G),XS(a)
- S(a);N_GUARD,XP(H)::R1(G)
- P(i);N_GUARD,XP(I)::R1(B)
- P(i);N_GUARD::R1(B)
- P(k);SBLOCK,XP(J)::S(D)
- Tries
- Try
- R(B);
- Vars
- B(d);N_GUARD,XP(F)::P(E)
- S(a);N_GUARD,XP(C)::R1(G)
- S(a);N_GUARD,XP(H)::R1(G)
- P(i);N_GUARD,XP(I)::R1(B)
- P(k);SBLOCK,XP(J)::S(D)
- S(a);N_GUARD::R1(G),XS(a)
- B(d);SBLOCK::S(D)
- S(a);N_GUARD::R1(G)
- P(i);N_GUARD::R1(B)
- Refutation
- P(b);CHECK,XR(B)
- Try
- R(B);
- Vars
- B(d);N_GUARD,XP(F)::P(E)
- S(a);N_GUARD,XP(C)::R1(G)
- S(a);N_GUARD,XP(H)::R1(G)
- P(i);N_GUARD,XP(I)::R1(B)
- S(a);N_GUARD::R1(G),XS(a)
- B(d);SBLOCK::S(D)
- S(a);N_GUARD::R1(G)
- P(i);N_GUARD::R1(B)
- Refutation
- P(k);XP(J)
- Try
- R(G);
- Threat
- S(D)
- Vars
- S(a);N_GUARD,XP(H)::R1(G)
- P(i);N_GUARD,XP(I)::R1(B)
- Refutation
- P(c);XR(G)
- Try
- R(G);
- Threat
- S(D)
- Vars
- S(a);N_GUARD,XP(H)::R1(G)
- S(a);N_GUARD::R1(G),XS(a)
- Refutation
- P(i);XP(I)
- Try
- R(G);
- Vars
- B(d);N_GUARD,XP(F)::P(E)
- S(a);N_GUARD,XP(C)::R1(G)
- S(a);N_GUARD,XP(H)::R1(G)
- P(i);N_GUARD,XP(I)::R1(B)
- P(k);SBLOCK,XP(J)::S(D)
- S(a);N_GUARD::R1(G),XS(a)
- B(d);SBLOCK::R(G)
- S(a);N_GUARD::R1(G)
- P(i);N_GUARD::R1(B)
- Refutation
- P(f);
- Try
- P(I);XP(i)
- Threat
- R1(B)
- Vars
- S(a);N_GUARD,XP(H)::R1(G)
- S(a);N_GUARD::R1(G),XS(a)
- Refutation
- P(j);XP(I)
- Try
- P(I);
- Vars
- B(d);N_GUARD,XP(F)::P(E)
- S(a);N_GUARD,XP(C)::R1(G)
- S(a);N_GUARD,XP(H)::R1(G)
- P(k);SBLOCK,XP(J)::S(D)
- S(a);N_GUARD::R1(G),XS(a)
- B(d);SBLOCK::S(D)
- S(a);N_GUARD::R1(G)
- P(i);N_GUARD::R1(B)
- Refutation
- P(k);XP(I)
- Try
- P(J);XP(k)
- Vars
- B(d);N_GUARD,XP(F)::P(E)
- S(a);N_GUARD,XP(C)::R1(G)
- S(a);N_GUARD,XP(H)::R1(G)
- P(i);N_GUARD,XP(I)::R1(B)
- S(a);N_GUARD::R1(G),XS(a)
- B(d);SBLOCK::S(D)
- S(a);N_GUARD::R1(G)
- P(i);N_GUARD::R1(B)
- P(j);SBLOCK::S(D)
- Refutation
- P(j);
- Try
- Actual
- R(G);
- Threat
- S(K)
- Vars
- K(e);S_FLIGHT,XR(G)::S(D)
- B(d);SBLOCK,XR(G)::S(D)
- S(a);N_GUARD,XP(H)::R1(G)
Developed and maintained by Brian Stephenson.
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