MESON Chess Problem Database
Problem Display
PID: 144252 (4r3/1BppQPp1/4n3/3R3p/1p1NkN2/8/3Kn3/5R2 w - - 0 1)
Latzel, Gerhard Paul
American Chess Problemist, 1950
#2
8 + 9
SOLUTION
- SOUND
- Tries
- 1.Sf3?
- threat
- 2.Sg5#
- 1...Kxf4
- 2.Qh4#
- 1...g5
- 2.Sxg5#
- 1...Rxe7!
- threat
- 1.Sdxe6?
- threat
- 2.Sc5#
- 2.Sg5#
- 1...c5
- 2.Sxc5#
- 2.Sg5#
- 1...g5
- 2.Sc5#
- 2.Sxg5#
- 1...dxe6!
- threat
- 1.Sfxe2?
- threat
- 2.Sg3#
- 2.Rf4#
- 1...Rxe7
- 2.Sg3#
- 1...h4
- 2.Rf4#
- 1...g5
- 2.Sg3#
- 1...c6!
- threat
- 1.Re5+?
- 1...Kxd4
- 2.Re4#
- 1...Kxe5!
- 1...Kxd4
- 1.Rd6+?
- 1...Ke5
- 2.Sd3#
- 2.Sg6#
- 1...c6!
- 1...Ke5
- 1.Rxd7+?
- 1...Ke5
- 2.Sd3#
- 2.Sg6#
- 1...c6!
- 1...Ke5
- 1.Qxb4?
- threat
- 2.Qb1#
- 1...S2xf4
- 2.Sxe6#
- 1...S6xd4
- 2.fxe8Q#
- 2.fxe8R#
- 1...S6xf4
- 2.Sxe2#
- 1...Sc1
- 2.Sdxe6#
- 1...Sc3
- 2.Sdxe6#
- 1...Sc5
- 2.Sdxe2#
- 1...S2xd4!
- threat
- 1.Qc5?
- threat
- 2.Re5#
- 2.Qc2#
- 1...S2xd4
- 2.Rxd4#
- 2.Re5#
- 1...S2xf4
- 2.Re5#
- 1...S6xd4
- 2.Rxd4#
- 2.Re5#
- 1...S6xf4
- 2.Re5#
- 1...Sc1
- 2.Re5#
- 1...Sc3
- 2.Re5#
- 1...b3
- 2.Re5#
- 1...Sxc5!
- threat
- 1.Qg5?
- threat
- 2.Qg2#
- 2.Qe5#
- 2.Qf5#
- 2.Qg6#
- 1...S2xd4
- 2.Re5#
- 2.Qe5#
- 1...S2xf4
- 2.Qe5#
- 2.Qf5#
- 1...S6xd4
- 2.Re5#
- 1...S6xf4
- 2.Qf5#
- 1...Sg1
- 2.Qe5#
- 2.Qf5#
- 2.Qg6#
- 1...Sg3
- 2.Qe5#
- 1...Sc5
- 2.Qg2#
- 2.Qf5#
- 2.Qg6#
- 1...Sd8
- 2.Qg2#
- 2.Qf5#
- 2.Qg6#
- 1...Sf8
- 2.Qg2#
- 2.Qf5#
- 1...d6
- 2.Qg2#
- 2.Qf5#
- 2.Qg6#
- 1...g6
- 2.Qg2#
- 2.Qe5#
- 2.Qxg6#
- 1...Sxg5!
- threat
- 1.Qd6?
- threat
- 2.Re5#
- 2.Qe5#
- 1...S6xd4
- 2.Re5#
- 1...S6xf4
- 2.Re5#
- 1...Sc5
- 2.Re5#
- 2.Qg6#
- 1...Sg5
- 2.Re5#
- 2.Qg6#
- 1...Sd8
- 2.Re5#
- 2.Qg6#
- 1...Sf8
- 2.Re5#
- 1...cxd6!
- threat
- 1.Qf6?
- threat
- 2.Qe5#
- 2.Qf5#
- 2.Qg6#
- 1...S2xd4
- 2.Rxd4#
- 2.Re5#
- 2.Qe5#
- 1...S2xf4
- 2.Qe5#
- 2.Qf5#
- 1...S6xd4
- 2.Rxd4#
- 2.Re5#
- 1...S6xf4
- 2.Qf5#
- 1...Sg3
- 2.Qe5#
- 1...Sc5
- 2.Qf5#
- 2.Qg6#
- 1...Sg5
- 2.Qf5#
- 2.Qg6#
- 1...Sd8
- 2.Qf5#
- 2.Qg6#
- 1...Sf8
- 2.Qf5#
- 1...d6
- 2.Qf5#
- 2.Qg6#
- 1...g6
- 2.Qe5#
- 2.Qxg6#
- 1...gxf6!
- threat
- 1.Sf3?
- Keys
- 1.Qh4!
- threat
- 2.Qh1#
- 1...S2xd4
- 2.Sxe6#
- 1...S2xf4
- 2.Re1#
- 1...S6xd4
- 2.Sxe2#
- 1...S6xf4
- 2.fxe8Q#
- 2.fxe8R#
- 1...Sg1
- 2.Sfxe6#
- 1...Sg3
- 2.Sfxe6#
- 1...Sg5
- 2.Sfxe2#
- threat
- 1.Qh4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 6
- REMOVED MATES = 0
- Sets
- Tries
- Try
- S(C);
- Threat
- S(C)
- Vars
- K(c);N_SPINS(e),OGATEB,P-FLIGHT,XS(D)::QAR2(G)
- P(h);::S(C),XP(h)
- Refutation
- R(i);N_SPINS(e),XQ(G)
- Try
- S(C);XS(e)
- Threat
- DUALS(2)
- Refutation
- P(g);P_SPINP(g),XS(C)
- Try
- S(D);XS(a)
- Threat
- DUALS(2)
- Vars
- R(i);N_SPINS(e),XQ(G)::S(D)
- P(d);::R1(A)
- P(h);::S(D)
- Refutation
- P(f);
- Try
- R(E);CHECK,N_PINS(e)
- Vars
- K(c);P-FLIGHT,XS(C)::R1(E)
- Refutation
- K(c);P-FLIGHT,P_SPINS(e),XR(E)
- Try
- R(E);CHECK
- Refutation
- P(f);P_SPINP(f)
- Try
- R(E);CHECK,XP(g)
- Refutation
- P(f);P_SPINP(f)
- Try
- Q(G);N_PINS(e),XP(b)
- Threat
- QAB(G)
- Vars
- S(a);N_GUARD,XS(D)::QAR(G)+S(C),XS(e)
- S(e);P_SPINS(e),XS(C)::PXR(i)=Q
- S(e);N_GUARD,XS(D)::QAR(G)+S(C),XS(a)
- S(a);N_GUARD::QAR(G)+S(C),XS(e)
- S(e);N_GUARD::QAR(G)+S(C),XS(a)
- Refutation
- S(a);P_SPINS(a),XS(C)
- Try
- Q(G);N_PINS(e)
- Threat
- DUALS(2)
- Vars
- S(a);XS(D)::B(F)+R(E),DCHECK
- S(e);XS(D)::B(F)+R(E),DCHECK
- S(a);::B(F)+R(E),DCHECK
- P(b);::B(F)+R(E),DCHECK
- Refutation
- S(e);XQ(G)
- Try
- Q(G);N_PINS(e)
- Threat
- DUALS(4)
- Vars
- S(e);SBLOCK,XS(C)::B(F)+R(E),DCHECK
- S(e);XS(D)::QAB1(G)
- S(a);::QAR1(G)
- Refutation
- S(e);XQ(G)
- Try
- Q(G);N_PINS(e)
- Threat
- DUALS(2)
- Vars
- S(e);XS(C)::B(F)+R(E),DCHECK
- S(e);XS(D)::B(F)+R(E),DCHECK
- S(e);::B(F)+R(E),DCHECK
- Refutation
- P(f);XQ(G)
- Try
- Q(G);N_PINS(e)
- Threat
- DUALS(3)
- Vars
- S(e);XS(D)::QAB1(G)
- S(a);::QAR1(G)
- S(e);::QAB1(G)
- Refutation
- P(h);XQ(G)
- Try
- Actual
- Q(G);N_PINS(e)
- Threat
- QAB(G)
- Vars
- S(a);N_GUARD,XS(C)::QAR(G)+S(D),XS(e)
- S(a);OGATEB,P_SPINS(a),XS(D)::R(A)
- S(e);N_GUARD,XS(C)::QAR(G)+S(D),XS(a)
- S(e);P_SPINS(e),XS(D)::PXR(i)=Q
- S(a);N_GUARD::QAR(G)+S(D),XS(e)
- S(e);N_GUARD::QAR(G)+S(D),XS(a)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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