MESON Chess Problem Database
Problem Display
PID: 227059 (4K3/3p1B1P/2p5/4N3/RBNkq1bR/p1pp1pP1/r4P2/b3Q3 w - - 0 1)
Mettler, Josef
Schweizerische Schachzeitung, 1951
#2
11 + 11
| 15257 | Kunstwerke auf 64 Feldern (1922-1966) (Ott, Kummer, Schudel) | 1968 |
SOLUTION
- SOUND
- Sets
- 1...Qd5
- 2.Qe3#
- 1...Qf5
- 2.Qe3#
- 1...Qg6
- 2.Sxf3#
- 2.Qe3#
- 1...Qxh7
- 2.Sxf3#
- 2.Qe3#
- 1...Qe3
- 2.Qxe3#
- 1...Qxe5+
- 2.Qxe5#
- 1...Rb2
- 2.Qxc3#
- 1...Bh3
- 2.Rxe4#
- 2.Qe3#
- 2.Qxe4#
- 1...Bf5
- 2.Qe3#
- 1...Bh5
- 2.Rxe4#
- 2.Qe3#
- 2.Qxe4#
- 1...Be6
- 2.Qxe4#
- 1...Qd5
- Tries
- 1.Sb2?
- threat
- 2.Bd6#
- 2.Qxc3#
- 1...Qxe5+
- 2.Be7#
- 1...Qxh7
- 2.Sxf3#
- 2.Bxa3#
- 2.Bd6#
- 2.Be7#
- 2.Bf8#
- 2.Qe3#
- 1...Qxe1
- 2.Bd6#
- 1...Rxb2
- 2.Qxc3#
- 1...Bxb2
- 2.Bd6#
- 1...axb2
- 2.Qxc3#
- 1...cxb2
- 2.Bd6#
- 2.Qc3#
- 1...Qe2
- 2.Bd6#
- 1...Qe3
- 2.Bd6#
- 2.Qxe3#
- 1...Be6
- 2.Qxe4#
- 1...Qd5
- 2.Qe3#
- 1...Qf5
- 2.Bxa3#
- 2.Bd6#
- 2.Be7#
- 2.Bf8#
- 2.Qe3#
- 1...Qg6
- 2.Sxf3#
- 2.Bxa3#
- 2.Bd6#
- 2.Be7#
- 2.Bf8#
- 2.Qe3#
- 1...Qf4
- 2.Bxa3#
- 2.Bd6#
- 2.Be7#
- 2.Bf8#
- 1...c2
- 2.Bd6#
- 2.Qc3#
- 1...d2
- 2.Bd6#
- 1...c5
- 2.Bxc3#
- 2.Qxc3#
- 1...d6
- 2.Bxd6#
- 2.Qxc3#
- 1...Kxe5!
- threat
- 1.Sa5?
- threat
- 2.Bd6#
- 1...Qxe5+
- 2.Be7#
- 1...Be6
- 2.Qxe4#
- 1...Qd5
- 2.Qe3#
- 1...Rb2
- 2.Qxc3#
- 1...c5
- 2.Bxc3#
- 1...d6
- 2.Bxd6#
- 1...Kxe5!
- threat
- 1.Sb6?
- threat
- 2.Bd6#
- 1...Qxe5+
- 2.Be7#
- 1...Qd5
- 2.Qe3#
- 1...Rb2
- 2.Qxc3#
- 1...Be6
- 2.Sxf3#
- 2.Rxe4#
- 2.Qxe4#
- 1...c5
- 2.Bxc3#
- 1...d6
- 2.Bxd6#
- 1...Kxe5!
- threat
- 1.Bxc3+?
- 1...Kc5
- 2.Ra5#
- 1...Bxc3!
- 1...Kc5
- 1.Bd6?
- threat
- 2.Sb2#
- 2.Sd2#
- 2.Sxa3#
- 2.Se3#
- 2.Sa5#
- 2.Sb6#
- 1...Qxe5+
- 2.Sxe5#
- 2.Qxe5#
- 1...Qe3
- 2.Sb2#
- 2.Sd2#
- 2.Sxa3#
- 2.Sxe3#
- 2.Sa5#
- 2.Sb6#
- 2.Qxe3#
- 1...Be6
- 2.Qxe4#
- 1...Qd5
- 2.Qe3#
- 1...Rb2
- 2.Sxb2#
- 1...Rd2
- 2.Sb2#
- 2.Sxd2#
- 2.Sxa3#
- 2.Se3#
- 2.Sa5#
- 2.Sb6#
- 1...Bb2
- 2.Sxb2#
- 2.Sd2#
- 2.Sxa3#
- 2.Se3#
- 2.Sa5#
- 2.Sb6#
- 1...c2
- 2.Sb2#
- 2.Sxa3#
- 2.Se3#
- 2.Sa5#
- 2.Sb6#
- 1...d2
- 2.Sb2#
- 2.Sxd2#
- 2.Sxa3#
- 2.Se3#
- 2.Sa5#
- 2.Sb6#
- 1...c5!
- threat
- 1.Rxg4?
- threat
- 2.Rxe4#
- 2.Qe3#
- 2.Qxe4#
- 1...Qxg4
- 2.Qe3#
- 1...Qf4
- 2.Sxf3#
- 2.Rxf4#
- 2.Qe3#
- 1...d5
- 2.Qe3#
- 1...Re2!
- threat
- 1.Sb2?
- Keys
- 1.Se3!
- threat
- 2.Bd6#
- 1...Qxe5+
- 2.Be7#
- 1...Kxe5
- 2.h8Q#
- 2.h8B#
- 1...Qd5
- 2.Sf5#
- 1...Rb2
- 2.Qxc3#
- 1...Be6
- 2.Sxf3#
- 1...c5
- 2.Bxc3#
- 1...d6
- 2.Bxd6#
- threat
- 1.Se3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 2
- REMOVED MATES = 3
- Sets
- Q(h);N_GUARD,N_PINS(H),P_SPINB(i)::QAB1(A)
- Q(h);N_GUARD,P_SPINB(i)::QAB1(A),XQ(h)
- Q(h);CHECK,OGATE,P_SPINB(i),XS(H)::QAB1(A),XQ(h)
- R(b);S_CUTB(a)::QAB1(A),XP(d)
- B(i);P_SPINQ(h)::QAB1(A)
- B(i);N_PINS(H),P_SPINQ(h)::QAR1(A),XQ(h)
- Tries
- Try
- S(F);
- Threat
- DUALS(2)
- Vars
- Q(h);CHECK,P_SPINB(i),XS(H)::R(D)+B(E)
- Q(h);P_SPINB(i),XQ(A)::R(D)+B(E)
- R(b);XS(F)::QAB1(A),XP(d)
- B(a);XS(F)::R(D)+B(E)
- P(c);XS(F)::QAB1(A),XP(d)
- Q(h);P_SPINB(i)::R(D)+B(E)
- B(i);N_PINS(H),P_SPINQ(h)::QAR1(A),XQ(h)
- Q(h);N_GUARD,N_PINS(H),P_SPINB(i)::QAB1(A)
- P(e);::R(D)+B(E)
- Refutation
- K(g);P_SPINQ(h),S_FLIGHT,XS(H)
- Try
- S(F);
- Threat
- R(D)+B(E)
- Vars
- Q(h);CHECK,P_SPINB(i),XS(H)::R(D)+B(E)
- B(i);N_PINS(H),P_SPINQ(h)::QAR1(A),XQ(h)
- Q(h);N_GUARD,N_PINS(H),P_SPINB(i)::QAB1(A)
- R(b);S_CUTB(a)::QAB1(A),XP(d)
- P(j);SBLOCK::R(D)+B(E),DCHECK,XP(d)
- P(k);::R(D)+B(E),XP(k)
- Refutation
- K(g);P_SPINQ(h),S_FLIGHT,XS(H)
- Try
- S(F);
- Threat
- R(D)+B(E)
- Vars
- Q(h);CHECK,P_SPINB(i),XS(H)::R(D)+B(E)
- Q(h);N_GUARD,N_PINS(H),P_SPINB(i)::QAB1(A)
- R(b);S_CUTB(a)::QAB1(A),XP(d)
- P(j);SBLOCK::R(D)+B(E),DCHECK,XP(d)
- P(k);::R(D)+B(E),XP(k)
- Refutation
- K(g);P_SPINQ(h),S_FLIGHT,XS(H)
- Try
- B(E);CHECK,XP(d)
- Vars
- K(g);S_FLIGHT::R(D)
- Refutation
- B(a);XB(E)
- Try
- B(E);
- Threat
- DUALS(6)
- Vars
- B(i);N_PINS(H),P_SPINQ(h)::QAR1(A),XQ(h)
- Q(h);N_GUARD,N_PINS(H),P_SPINB(i)::QAB1(A)
- R(b);::R(D)+S(F),XR(b)
- Refutation
- P(j);
- Try
- R(G);P_PINQ(h),XB(i)
- Threat
- DUALS(3)
- Vars
- Q(h);N_PINS(H),N_SPINQ(h),XR(G)::QAB1(A)
- P(k);::QAB1(A)
- Refutation
- R(b);
- Try
- Actual
- S(F);
- Threat
- R(D)+B(E)
- Vars
- Q(h);CHECK,P_SPINB(i),SBLOCK,XS(H)::R(D)+B(E)
- K(g);S_FLIGHT,XS(H)::P=Q
- Q(h);N_GUARD,N_PINS(H),P_SPINB(i)::S(F)
- R(b);S_CUTB(a)::QAB1(A),XP(d)
- B(i);N_PINS(H),P_SPINQ(h)::S(H),XP(f)
- P(j);SBLOCK::R(D)+B(E),DCHECK,XP(d)
- P(k);::R(D)+B(E),XP(k)
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).