MESON Chess Problem Database
Problem Display
PID: 175 (1b1nR3/4N3/K1Q1pr2/3Pk1r1/8/B1PBN1P1/3nb3/4R3 w - - 0 1)
Fleck, Ferenc
1st Prize, German Ring Ty., 1950/I
#2
11 + 8
| 23 | Die Schwalbe | 1950 |
| 45 | Schach | 1951 |
SOLUTION
- SOUND
- Sets
- 1...Rg4
- 2.Sxg4#
- 1...Rgf5
- 2.Sg4#
- 1...Rh5
- 2.Sg4#
- 1...Bd1
- 2.Sc4#
- 2.Sg4#
- 1...Bf1
- 2.Sc4#
- 2.Sg4#
- 1...Bxd3+
- 2.Sc4#
- 1...Bf3
- 2.Sc4#
- 2.Sg4#
- 1...Bg4
- 2.Sc4#
- 2.Sxg4#
- 1...Bh5
- 2.Sc4#
- 2.Sg4#
- 1...Bd6
- 2.Bxd6#
- 2.Qxd6#
- 1...Ba7
- 2.Bd6#
- 2.Qd6#
- 2.Qc7#
- 1...Bc7
- 2.Qxc7#
- 1...Sb1
- 2.Sc4#
- 1...Sf1
- 2.Sc4#
- 1...Sb3
- 2.Sc4#
- 1...Sf3
- 2.Sc4#
- 1...Sc4
- 2.Sxc4#
- 1...Se4
- 2.Sc4#
- 1...Sxc6
- 2.Sxc6#
- 1...exd5
- 2.Sg6#
- 1...Rg4
- Tries
- 1.Rxe2?
- threat
- 2.Sc4#
- 2.Sg4#
- 1...Rf1
- 2.Sg4#
- 1...Rf2
- 2.Sg4#
- 1...Rf3
- 2.Sg4#
- 1...Rf4
- 2.Sg4#
- 1...Rff5
- 2.Sg4#
- 1...Rfg6
- 2.Sg4#
- 1...Rh6
- 2.Sg4#
- 1...Rf7
- 2.Sg4#
- 1...Rf8
- 2.Sg4#
- 1...Rg4
- 2.Sc4#
- 2.Sxg4#
- 1...Sc4
- 2.Sxc4#
- 2.Sg4#
- 1...Se4
- 2.Sc4#
- 1...Rxg3!
- threat
- 1.Qa4?
- threat
- 2.Qd4#
- 1...Bxd3+
- 2.Sc4#
- 1...exd5+
- 2.Sc6#
- 1...Rf4
- 2.Qxf4#
- 1...Rg4
- 2.Sxg4#
- 1...Sb3
- 2.Sc4#
- 2.Qe4#
- 1...Sf3
- 2.Sc4#
- 2.Qe4#
- 1...Sc4
- 2.Sxc4#
- 1...Sc6
- 2.Sxc6#
- 1...Ba7!
- threat
- 1.Qc5?
- threat
- 2.Qd4#
- 2.d6#
- 1...Bxd3+
- 2.Sc4#
- 1...exd5+
- 2.Sc6#
- 1...Rxg3
- 2.Qd4#
- 1...Rf1
- 2.Qd4#
- 1...Rf2
- 2.Qd4#
- 1...Rf3
- 2.Qd4#
- 1...Rff5
- 2.Qd4#
- 1...Rfg6
- 2.Qd4#
- 1...Rh6
- 2.Qd4#
- 1...Rf7
- 2.Qd4#
- 1...Rf8
- 2.Qd4#
- 1...Rg4
- 2.Sxg4#
- 2.d6#
- 1...Bf3
- 2.Sc4#
- 2.Sg4#
- 2.Qd4#
- 1...Bd6
- 2.Qd4#
- 2.Qxd6#
- 1...Ba7
- 2.Qd6#
- 2.Qc7#
- 1...Sb3
- 2.Sc4#
- 1...Sf3
- 2.Sc4#
- 2.d6#
- 1...Se4
- 2.Sc4#
- 2.Qd4#
- 1...Sc6
- 2.Sxc6#
- 2.dxc6#
- 2.d6#
- 1...Sb7
- 2.Sc6#
- 2.Qd4#
- 1...Rf4!
- threat
- 1.Qb6?
- threat
- 2.Qd4#
- 2.Qxb8#
- 1...Bxd3+
- 2.Sc4#
- 1...exd5
- 2.Sc6#
- 2.Sg6#
- 1...Rf1
- 2.Qd4#
- 1...Rf2
- 2.Qd4#
- 1...Rf3
- 2.Qd4#
- 1...Rff5
- 2.Qd4#
- 1...Rfg6
- 2.Qd4#
- 1...Rh6
- 2.Qd4#
- 1...Rf7
- 2.Qd4#
- 1...Rf8
- 2.Qd4#
- 1...Rg4
- 2.Sxg4#
- 2.Qxb8#
- 1...Bd6
- 2.Bxd6#
- 2.Qd4#
- 2.Qxd6#
- 1...Ba7
- 2.Bd6#
- 2.Qc7#
- 2.Qd6#
- 1...Bc7
- 2.Qd4#
- 2.Qxc7#
- 1...Sb3
- 2.Sc4#
- 2.Qxb8#
- 1...Sf3
- 2.Sc4#
- 2.Qxb8#
- 1...Sc4
- 2.Sxc4#
- 2.Qd4#
- 1...Se4
- 2.Sc4#
- 2.Qd4#
- 1...Sc6
- 2.Sxc6#
- 1...Sb7
- 2.Sc6#
- 2.Qd4#
- 1...Sf7
- 2.Sc6#
- 2.Qd4#
- 1...Rf4!
- threat
- 1.Qxe6+?
- 1...Sxe6
- 2.Sc6#
- 1...Rxe6+!
- 1...Sxe6
- 1.Rxe2?
- Keys
- 1.Qc4!
- threat
- 2.Qd4#
- 1...exd5+
- 2.Sc6#
- 1...Bxd3
- 2.Sg4#
- 1...Sxc4
- 2.Sxc4#
- 1...Rf4
- 2.Qxf4#
- 1...Rg4
- 2.Sxg4#
- 1...Ba7
- 2.Qc7#
- 1...Sb3
- 2.Qe4#
- 1...Sf3
- 2.Qe4#
- 1...Sc6
- 2.Sxc6#
- threat
- 1.Qc4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 4
- ADDED MATES = 2
- REMOVED MATES = 6
- Sets
- R(d);N_GUARD::S(E),XR(d)
- R(d);N_GUARD::S(E)
- B(b);CHECK,XB(D)::R(A)+S(E),DCHECK
- B(g);N_GUARD::QAB(I),XB(g)
- S(a);N_GUARD::S(E)
- S(a);N_GUARD,N_PINB(D)::S(E),XS(a)
- S(h);XQ(I)::S(J),XS(h)
- P(e);P_PINQ(I),XP(G)::R(K)+S(J),DCHECK
- Tries
- Try
- R(A);N_SPINB(D),XB(b)
- Threat
- DUALS(2)
- Vars
- R(f);::R(A)+S(E),DCHECK
- S(a);::S(E)
- Refutation
- R(d);XP(F)
- Try
- Q(I);
- Threat
- QAB1(I)
- Vars
- B(b);CHECK,XB(D)::R(A)+S(E),DCHECK
- P(e);CHECK,XP(G)::R(K)+S(J),DCHECK
- R(f);N_GUARD::QAB1(I),XR(f)
- R(d);N_GUARD::S(E),XR(d)
- S(a);N_GUARD,N_PINB(D)::S(E),XS(a)
- S(h);N_GUARD::S(J),XS(h)
- Refutation
- B(g);
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- B(b);CHECK,XB(D)::R(A)+S(E),DCHECK
- P(e);CHECK,P_SPINP(e),XP(G)::R(K)+S(J),DCHECK
- R(d);XP(F)::QAB1(I)
- R(f);::QAB1(I)
- S(a);N_GUARD::S(E)
- Refutation
- R(f);
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- B(b);CHECK,XB(D)::R(A)+S(E),DCHECK
- R(f);::QAB1(I)
- S(h);N_GUARD::S(J),XS(h)
- Refutation
- R(f);
- Try
- Q(I);CHECK,P_SPINQ(I),XP(e)
- Vars
- S(h);XQ(I)::S(J)
- Refutation
- R(f);CHECK,XQ(I)
- Try
- Actual
- Q(I);N_SPINB(D)
- Threat
- QAB1(I)
- Vars
- P(e);CHECK,XP(G)::R(K)+S(J),DCHECK
- B(b);P_PINQ(I),XB(D)::R(A)+S(E),DCHECK
- S(a);XQ(I)::S(E),XS(a)
- R(f);N_GUARD::QAB1(I),XR(f)
- R(d);N_GUARD::S(E),XR(d)
- B(g);N_GUARD::QAB(I)
- S(a);N_GUARD::QAR1(I)
- S(h);N_GUARD::S(J),XS(h)
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).