MESON Chess Problem Database
Problem Display
PID: 110730 (3K4/4Pp1n/1P2pN2/4k1bR/p2pNpP1/prBR1P2/Q1nP4/8 w - - 0 1)
Goldschmidt, Ervin
2nd Prize, Epitpmunkas, 1929
#2
12 + 11
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Rb1
- 2.Sd7#
- 1...Rb2
- 2.Sd7#
- 1...Rxc3
- 2.Sd7#
- 1...Rb4
- 2.Sd7#
- 1...Rb5
- 2.Sd7#
- 1...Rxb6
- 2.Sd7#
- 1...Sa1
- 2.Bxd4#
- 1...Se1
- 2.Bxd4#
- 1...Se3
- 2.Bxd4#
- 1...Sb4
- 2.Bxd4#
- 1...Sxf6
- 2.Rxg5#
- 1...Sf8
- 2.Rxg5#
- 1...dxc3
- 2.Sd7#
- 1...Rb1
- Tries
- 1.Kc7?
- 1...Rxb6
- 2.Sd7#
- 1...Sxf6
- 2.Rxg5#
- 1...dxc3
- 2.Sd7#
- 1...Rb1
- 2.Sd7#
- 1...Rb2
- 2.Sd7#
- 1...Rb4
- 2.Sd7#
- 1...Rb5
- 2.Sd7#
- 1...Sa1
- 2.Bxd4#
- 1...Se1
- 2.Bxd4#
- 1...Se3
- 2.Bxd4#
- 1...Sb4
- 2.Bxd4#
- 1...Sf8
- 2.Rxg5#
- 1...Rxc3+!
- 1...Rxb6
- 1.Kc8?
- 1...Rxb6
- 2.Sd7#
- 1...Sxf6
- 2.Rxg5#
- 1...dxc3
- 2.Sd7#
- 1...Rb1
- 2.Sd7#
- 1...Rb2
- 2.Sd7#
- 1...Rb4
- 2.Sd7#
- 1...Rb5
- 2.Sd7#
- 1...Sa1
- 2.Bxd4#
- 1...Se1
- 2.Bxd4#
- 1...Se3
- 2.Bxd4#
- 1...Sb4
- 2.Bxd4#
- 1...Sf8
- 2.Rxg5#
- 1...Rxc3+!
- 1...Rxb6
- 1.Ke8?
- 1...Rxc3
- 2.Sd7#
- 1...Rxb6
- 2.Sd7#
- 1...dxc3
- 2.Sd7#
- 1...Rb1
- 2.Sd7#
- 1...Rb2
- 2.Sd7#
- 1...Rb4
- 2.Sd7#
- 1...Rb5
- 2.Sd7#
- 1...Sa1
- 2.Bxd4#
- 1...Se1
- 2.Bxd4#
- 1...Se3
- 2.Bxd4#
- 1...Sb4
- 2.Bxd4#
- 1...Sf8
- 2.Rxg5#
- 1...Sxf6+!
- 1...Rxc3
- 1.Ba1?
- 1...Rxd3
- 2.Sd7#
- 1...Rxb6
- 2.Sd7#
- 1...Sxf6
- 2.Rxg5#
- 1...Rb1
- 2.Sd7#
- 1...Rb2
- 2.Sd7#
- 1...Rc3
- 2.Sd7#
- 1...Rb4
- 2.Sd7#
- 1...Rb5
- 2.Sd7#
- 1...Se1
- 2.Bxd4#
- 1...Se3
- 2.Bxd4#
- 1...Sb4
- 2.Bxd4#
- 1...Sf8
- 2.Rxg5#
- 1...Sxa1!
- 1...Rxd3
- 1.Bb2?
- 1...Rxb2
- 2.Sd7#
- 1...Rxd3
- 2.Sd7#
- 1...Rxb6
- 2.Sd7#
- 1...Sxf6
- 2.Rxg5#
- 1...Rc3
- 2.Sd7#
- 1...Rb4
- 2.Sd7#
- 1...Rb5
- 2.Sd7#
- 1...Sa1
- 2.Bxd4#
- 1...Se1
- 2.Bxd4#
- 1...Se3
- 2.Bxd4#
- 1...Sb4
- 2.Bxd4#
- 1...Sf8
- 2.Rxg5#
- 1...axb2!
- 1...Rxb2
- 1.Bb4?
- threat
- 2.Bd6#
- 1...Rxb4
- 2.Sd7#
- 1...Sxf6
- 2.Rxg5#
- 1...Sxb4!
- threat
- 1.Qxb3?
- threat
- 2.Sd7#
- 2.Qb5#
- 1...Sxf6
- 2.Rxg5#
- 1...Se3
- 2.Sd7#
- 2.Bxd4#
- 1...Sb4
- 2.Sd7#
- 2.Bxd4#
- 1...Sf8
- 2.Rxg5#
- 2.Qb5#
- 1...axb3!
- threat
- 1.b7?
- 1...Rxc3
- 2.Sd7#
- 1...Sxf6
- 2.Rxg5#
- 1...dxc3
- 2.Sd7#
- 1...Rb4
- 2.Sd7#
- 1...Rb1
- 2.Sd7#
- 1...Rb2
- 2.Sd7#
- 1...Rb5
- 2.Sd7#
- 1...Rb6
- 2.Sd7#
- 1...Sa1
- 2.Bxd4#
- 1...Se1
- 2.Bxd4#
- 1...Se3
- 2.Bxd4#
- 1...Sb4
- 2.Bxd4#
- 2.b8Q#
- 2.b8B#
- 1...Sf8
- 2.Rxg5#
- 1...Rxb7!
- 1...Rxc3
- 1.e8R?
- 1...Rxc3
- 2.Qd5#
- 1...Rxb6
- 2.Qd5#
- 1...Sxf6
- 2.Rxg5#
- 1...dxc3
- 2.Rd5#
- 1...Rb4
- 2.Qd5#
- 1...Rb1
- 2.Qd5#
- 1...Rb2
- 2.Qd5#
- 1...Sa1
- 2.Bxd4#
- 1...Se1
- 2.Bxd4#
- 1...Se3
- 2.Bxd4#
- 1...Sb4
- 2.Bxd4#
- 1...Sf8
- 2.Rxg5#
- 1...Rb5!
- 1...Rxc3
- 1.Kc7?
- Keys
- 1.e8Q!
- 1...Rxc3
- 2.Qd5#
- 1...Rxb6
- 2.Qd5#
- 1...Sxf6
- 2.Rxg5#
- 1...dxc3
- 2.Rd5#
- 1...Rb4
- 2.Qd5#
- 1...Rb1
- 2.Qd5#
- 1...Rb2
- 2.Qd5#
- 1...Rb5
- 2.Qxb5#
- 1...Sa1
- 2.Bxd4#
- 1...Se1
- 2.Bxd4#
- 1...Se3
- 2.Bxd4#
- 1...Sb4
- 2.Bxd4#
- 1...Sf8
- 2.Rxg5#
- 1...Rxc3
- 1.e8Q!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 7
- ADDED MATES = 0
- REMOVED MATES = 0
- Sets
- R(c);::S(J)
- R(c);N_SPINP(e),XB(C)::S(J)
- R(c);XP(I)::S(J)
- S(a);N_GUARD::B(C),XP(e)
- S(k);N_GUARD,XS(J)::R(H),XB(h)
- S(k);N_GUARD::R(H),XB(h)
- P(e);N_SPINP(e),XB(C)::S(J)
- Tries
- Try
- K(L);S_FLIGHT
- Vars
- R(c);XP(I)::S(J)
- S(k);N_GUARD,XS(J)::R(H),XB(h)
- P(e);N_SPINP(e),XB(C)::S(J)
- R(c);::S(J)
- S(a);N_GUARD::B(C),XP(e)
- S(k);N_GUARD::R(H),XB(h)
- Refutation
- R(c);CHECK,N_SPINP(e),XB(C)
- Try
- K(L);P-FLIGHT
- Vars
- R(c);XP(I)::S(J)
- S(k);N_GUARD,XS(J)::R(H),XB(h)
- P(e);N_SPINP(e),XB(C)::S(J)
- R(c);::S(J)
- S(a);N_GUARD::B(C),XP(e)
- S(k);N_GUARD::R(H),XB(h)
- Refutation
- R(c);CHECK,N_SPINP(e),XB(C)
- Try
- K(L);P-FLIGHT
- Vars
- R(c);N_SPINP(e),XB(C)::S(J)
- R(c);XP(I)::S(J)
- P(e);N_SPINP(e),XB(C)::S(J)
- R(c);::S(J)
- S(a);N_GUARD::B(C),XP(e)
- S(k);N_GUARD::R(H),XB(h)
- Refutation
- S(k);CHECK,XS(J)
- Try
- B(C);
- Vars
- R(c);XR(D)::S(J)
- R(c);XP(I)::S(J)
- S(k);N_GUARD,XS(J)::R(H),XB(h)
- R(c);::S(J)
- R(c);N_SPINP(e)::S(J)
- S(a);N_GUARD::B(C),XP(e)
- S(k);N_GUARD::R(H),XB(h)
- Refutation
- S(a);N_SPINP(e),XB(C)
- Try
- B(C);
- Vars
- R(c);N_SPINP(e),XB(C)::S(J)
- R(c);XR(D)::S(J)
- R(c);XP(I)::S(J)
- S(k);N_GUARD,XS(J)::R(H),XB(h)
- R(c);N_SPINP(e)::S(J)
- R(c);::S(J)
- S(a);N_GUARD::B(C),XP(e)
- S(k);N_GUARD::R(H),XB(h)
- Refutation
- P(b);N_SPINP(e),XB(C)
- Try
- B(C);N_PINP(e)
- Threat
- B(C)
- Vars
- R(c);XB(C)::S(J)
- S(k);N_GUARD,XS(J)::R(H),XB(h)
- Refutation
- S(a);XB(C)
- Try
- Q(A);XR(c)
- Threat
- DUALS(2)
- Vars
- S(k);N_GUARD,XS(J)::R(H),XB(h)
- Refutation
- P(d);XQ(A)
- Try
- P(I);
- Vars
- R(c);N_SPINP(e),XB(C)::S(J)
- S(k);N_GUARD,XS(J)::R(H),XB(h)
- P(e);N_SPINP(e),XB(C)::S(J)
- R(c);::S(J)
- S(a);N_GUARD::B(C),XP(e)
- S(k);N_GUARD::R(H),XB(h)
- Refutation
- R(c);XP(I)
- Try
- P(K);P_SPINS(J)
- Vars
- R(c);N_SPINP(e),OGATE,P_SPINP(i),XB(C)::QAR1(A)
- R(c);OGATE,XP(I)::QAR1(A)
- S(k);N_GUARD,XS(J)::R(H),XB(h)
- P(e);N_SPINP(e),OGATE,P_SPINP(i),XB(C)::R1(D)
- R(c);OGATE::QAR1(A)
- S(a);N_GUARD::B(C),XP(e)
- S(k);N_GUARD::R(H),XB(h)
- Refutation
- R(c);
- Try
- Actual
- P(K);P_SPINS(J)
- Vars
- R(c);N_SPINP(e),OGATE,P_SPINP(i),XB(C)::QAR1(A)
- R(c);OGATE,XP(I)::QAR1(A)
- S(k);N_GUARD,XS(J)::R(H),XB(h)
- P(e);N_SPINP(e),OGATE,P_SPINP(i),XB(C)::R1(D)
- R(c);OGATE::QAR1(A)
- R(c);N_GUARD::QAR(K),XR(c)
- S(a);N_GUARD::B(C),XP(e)
- S(k);N_GUARD::R(H),XB(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).