MESON Chess Problem Database
Problem Display
PID: 158936 (8/p7/P1ppp1N1/Q1PkB3/2p2R2/3pn3/B1nP4/2K5 w - - 0 1)
Hoffmann, Fritz
Ajedrez Artistico, 1968
#2
9 + 9
SOLUTION
- SOUND
- Sets
- 1...Sa1
- 2.Rd4#
- 1...Se1
- 2.Rd4#
- 1...Sa3
- 2.Rd4#
- 1...Sb4
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Sd1
- 2.Bxc4#
- 1...Sf1
- 2.Bxc4#
- 1...Sg2
- 2.Bxc4#
- 1...Sg4
- 2.Bxc4#
- 1...Sf5
- 2.Bxc4#
- 1...dxc5
- 2.Qd8#
- 1...dxe5
- 2.Se7#
- 1...Sa1
- Tries
- 1.Kb1?
- 1...dxc5
- 2.Qd8#
- 1...dxe5
- 2.Se7#
- 1...Sa1
- 2.Rd4#
- 1...Se1
- 2.Rd4#
- 1...Sb4
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Sd1
- 2.Bxc4#
- 1...Sf1
- 2.Bxc4#
- 1...Sg2
- 2.Bxc4#
- 1...Sg4
- 2.Bxc4#
- 1...Sf5
- 2.Bxc4#
- 1...Sa3+!
- 1...dxc5
- 1.Kb2?
- 1...dxc5
- 2.Qd8#
- 1...dxe5
- 2.Se7#
- 1...Sa1
- 2.Rd4#
- 1...Se1
- 2.Rd4#
- 1...Sa3
- 2.Rd4#
- 1...Sb4
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Sf1
- 2.Bxc4#
- 1...Sg2
- 2.Bxc4#
- 1...Sg4
- 2.Bxc4#
- 1...Sf5
- 2.Bxc4#
- 1...Sd1+!
- 1...dxc5
- 1.Bb3?
- 1...dxc5
- 2.Qd8#
- 1...dxe5
- 2.Se7#
- 1...Sa1
- 2.Rd4#
- 1...Se1
- 2.Rd4#
- 1...Sa3
- 2.Rd4#
- 1...Sb4
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Sd1
- 2.Bxc4#
- 1...Sf1
- 2.Bxc4#
- 1...Sg2
- 2.Bxc4#
- 1...Sg4
- 2.Bxc4#
- 1...Sf5
- 2.Bxc4#
- 1...cxb3!
- 1...dxc5
- 1.Bb2?
- threat
- 2.Se7#
- 1...dxc5
- 2.Qd8#
- 1...Sd4
- 2.Rxd4#
- 1...Sf5
- 2.Bxc4#
- 1...e5!
- threat
- 1.Bc3?
- threat
- 2.Se7#
- 1...dxc5
- 2.Qd8#
- 1...Sd4
- 2.Rxd4#
- 1...Sf5
- 2.Bxc4#
- 1...e5!
- threat
- 1.Bxd6?
- threat
- 2.Se7#
- 1...Sf5
- 2.Bxc4#
- 1...e5!
- threat
- 1.Bf6?
- threat
- 2.Se7#
- 1...dxc5
- 2.Qd8#
- 1...Sf5
- 2.Bxc4#
- 1...e5!
- threat
- 1.Bg7?
- threat
- 2.Se7#
- 1...dxc5
- 2.Qd8#
- 1...Sf5
- 2.Bxc4#
- 1...e5!
- threat
- 1.Bh8?
- threat
- 2.Se7#
- 1...dxc5
- 2.Qd8#
- 1...Sf5
- 2.Bxc4#
- 1...e5!
- threat
- 1.Rxc4?
- threat
- 2.Rd4#
- 1...dxe5
- 2.Se7#
- 2.Qd8#
- 1...Sd4
- 2.Rxd4#
- 1...Sxc4!
- threat
- 1.Rg4?
- 1...dxc5
- 2.Qd8#
- 1...dxe5
- 2.Se7#
- 1...Sa1
- 2.Rd4#
- 1...Se1
- 2.Rd4#
- 1...Sa3
- 2.Rd4#
- 1...Sb4
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Sd1
- 2.Bxc4#
- 1...Sf1
- 2.Bxc4#
- 1...Sg2
- 2.Bxc4#
- 1...Sf5
- 2.Bxc4#
- 1...Sxg4!
- 1...dxc5
- 1.Rh4?
- 1...dxc5
- 2.Qd8#
- 1...dxe5
- 2.Se7#
- 1...Sa1
- 2.Rd4#
- 1...Se1
- 2.Rd4#
- 1...Sa3
- 2.Rd4#
- 1...Sb4
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Sd1
- 2.Bxc4#
- 1...Sf1
- 2.Bxc4#
- 1...Sg2
- 2.Bxc4#
- 1...Sf5
- 2.Bxc4#
- 1...Sg4!
- 1...dxc5
- 1.Qb6?
- 1...dxc5
- 2.Qd8#
- 1...dxe5
- 2.Se7#
- 1...Sa1
- 2.Rd4#
- 1...Se1
- 2.Rd4#
- 1...Sa3
- 2.Rd4#
- 1...Sb4
- 2.Rd4#
- 1...Sd4
- 2.Rxd4#
- 1...Sd1
- 2.Bxc4#
- 1...Sf1
- 2.Bxc4#
- 1...Sg2
- 2.Bxc4#
- 1...Sg4
- 2.Bxc4#
- 1...Sf5
- 2.Bxc4#
- 1...axb6!
- 1...dxc5
- 1.Qc7?
- threat
- 2.Qxd6#
- 1...Kxc5
- 2.Qa5#
- 1...dxc5
- 2.Se7#
- 2.Qd6#
- 2.Qd8#
- 2.Qd7#
- 1...dxe5
- 2.Qxe5#
- 2.Qd6#
- 1...Sf5!
- threat
- 1.Qd8?
- threat
- 2.Qxd6#
- 1...Kxc5
- 2.Qa5#
- 1...Sf5!
- threat
- 1.dxe3?
- threat
- 2.Bxc4#
- 2.e4#
- 1...Sxe3
- 2.Rd4#
- 1...dxe5
- 2.Se7#
- 2.Bxc4#
- 1...Sa3
- 2.Rd4#
- 2.e4#
- 1...Sd4
- 2.Rxd4#
- 2.e4#
- 1...d2+!
- threat
- 1.Kb1?
- Keys
- 1.Qc3!
- 1...Kxc5
- 2.Qa5#
- 1...dxc5
- 2.Se7#
- 1...dxe5
- 2.Qxe5#
- 1...Sa1
- 2.Qd4#
- 1...Se1
- 2.Qd4#
- 1...Sa3
- 2.Qd4#
- 1...Sb4
- 2.Qd4#
- 1...Sd4
- 2.Qxd4#
- 1...Sd1
- 2.Qxc4#
- 1...Sf1
- 2.Qxc4#
- 1...Sg2
- 2.Qxc4#
- 1...Sg4
- 2.Qxc4#
- 1...Sf5
- 2.Qxc4#
- 1...Kxc5
- 1.Qc3!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 12
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD::R1(D)
- S(a);N_GUARD::R1(D),XS(a)
- S(c);N_GUARD::B(B),XP(d)
- P(g);OGATEB,SBLOCK,XP(F)::QAR(E)
- P(g);SBLOCK,XB(G)::S(I)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- P(g);OGATEB,SBLOCK,XP(F)::QAR(E)
- P(g);SBLOCK,XB(G)::S(I)
- S(a);N_GUARD::R1(D)
- S(a);N_GUARD::R1(D),XS(a)
- S(c);N_GUARD::B(B),XP(d)
- Refutation
- S(a);CHECK
- Try
- K(A);S_FLIGHT
- Vars
- P(g);OGATEB,SBLOCK,XP(F)::QAR(E)
- P(g);SBLOCK,XB(G)::S(I)
- S(a);N_GUARD::R1(D)
- S(a);N_GUARD::R1(D),XS(a)
- S(c);N_GUARD::B(B),XP(d)
- Refutation
- S(c);CHECK
- Try
- B(B);
- Vars
- P(g);OGATEB,SBLOCK,XP(F)::QAR(E)
- P(g);SBLOCK,XB(G)::S(I)
- S(a);N_GUARD::R1(D)
- S(a);N_GUARD::R1(D),XS(a)
- S(c);N_GUARD::B(B),XP(d)
- Refutation
- P(d);N_SPINP(d),XB(B)
- Try
- B(G);
- Threat
- S(I)
- Vars
- P(g);OGATEB,SBLOCK,XP(F)::QAR(E)
- S(a);N_GUARD::R1(D),XS(a)
- S(c);N_GUARD::B(B),XP(d)
- Refutation
- P(h);
- Try
- B(G);
- Threat
- S(I)
- Vars
- P(g);OGATEB,SBLOCK,XP(F)::QAR(E)
- S(a);N_GUARD::R1(D),XS(a)
- S(c);N_GUARD::B(B),XP(d)
- Refutation
- P(h);
- Try
- B(G);XP(g)
- Threat
- S(I)
- Vars
- S(c);N_GUARD::B(B),XP(d)
- Refutation
- P(h);
- Try
- B(G);
- Threat
- S(I)
- Vars
- P(g);OGATEB,SBLOCK,XP(F)::QAR(E)
- S(c);N_GUARD::B(B),XP(d)
- Refutation
- P(h);
- Try
- B(G);
- Threat
- S(I)
- Vars
- P(g);OGATEB,SBLOCK,XP(F)::QAR(E)
- S(c);N_GUARD::B(B),XP(d)
- Refutation
- P(h);
- Try
- B(G);
- Threat
- S(I)
- Vars
- P(g);OGATEB,SBLOCK,XP(F)::QAR(E)
- S(c);N_GUARD::B(B),XP(d)
- Refutation
- P(h);
- Try
- R(D);XP(d)
- Threat
- B(B)+R(D),DCHECK
- Vars
- S(a);::B(B)+R(D),DCHECK,XS(a)
- Refutation
- S(c);P_SPINS(c),XR(D)
- Try
- R(D);
- Vars
- P(g);OGATEB,SBLOCK,XP(F)::QAR(E)
- P(g);SBLOCK,XB(G)::S(I)
- S(a);N_GUARD::R1(D)
- S(a);N_GUARD::R1(D),XS(a)
- S(c);N_GUARD::B(B),XP(d)
- Refutation
- S(c);XR(D)
- Try
- R(D);
- Vars
- P(g);OGATEB,SBLOCK,XP(F)::QAR(E)
- P(g);SBLOCK,XB(G)::S(I)
- S(a);N_GUARD::R1(D)
- S(a);N_GUARD::R1(D),XS(a)
- S(c);N_GUARD::B(B),XP(d)
- Refutation
- S(c);
- Try
- Q(E);
- Vars
- P(g);OGATEB,SBLOCK,XP(F)::QAR(E)
- P(g);SBLOCK,XB(G)::S(I)
- S(a);N_GUARD::R1(D)
- S(a);N_GUARD::R1(D),XS(a)
- S(c);N_GUARD::B(B),XP(d)
- Refutation
- P(i);XQ(E)
- Try
- Q(E);
- Threat
- QAR1(E),XP(g)
- Vars
- K(e);N_SPINP(d),OGATEB,P-FLIGHT,P_SPINP(f),XP(F)::QAR2(E)
- Refutation
- S(c);
- Try
- Q(E);
- Threat
- QAR1(E),XP(g)
- Vars
- K(e);N_SPINP(d),OGATEB,P-FLIGHT,XP(F)::QAR2(E)
- Refutation
- S(c);
- Try
- P(C);XS(c)
- Threat
- DUALS(2)
- Vars
- S(a);N_GUARD,XP(C)::R1(D)
- Refutation
- P(b);CHECK
- Try
- Actual
- Q(E);
- Vars
- K(e);OGATEB,P-FLIGHT,XP(F)::QAR2(E)
- P(g);SBLOCK,XP(F)::S(I)
- P(g);OGATE,XB(G)::QAR1(E),XP(g)
- S(a);N_GUARD::QAR1(E)
- S(a);N_GUARD::QAR1(E),XS(a)
- S(c);N_GUARD::QAB1(E),XP(d)
Developed and maintained by Brian Stephenson.
Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
CSS/Javascript (jQuery, Bootstrap & DataTables).