MESON Chess Problem Database
Problem Display
PID: 160225 (KB6/nN1p4/1k1N4/Rpp1p3/4B3/1pP5/bP3rp1/R5Q1 w - - 0 1)
Willemsens, Luis Cornelis
Probleemblad, 1953
#2
10 + 10
| 15148 | Sadier Collection | 2017 |
SOLUTION
- SOUND
- Sets
- 1...Rf1
- 2.Qxc5#
- 1...Rxb2
- 2.Qxc5#
- 1...Rc2
- 2.Qxc5#
- 1...Rd2
- 2.Qxc5#
- 1...Re2
- 2.Qxc5#
- 1...Rf3
- 2.Qxc5#
- 1...Rf4
- 2.Qxc5#
- 1...Rf5
- 2.Qxc5#
- 1...Rf6
- 2.Qxc5#
- 1...Rf7
- 2.Qxc5#
- 1...Rf8
- 2.Qxc5#
- 1...Bb1
- 2.Ra6#
- 1...Sc6
- 2.Sc8#
- 1...Sc8
- 2.Sxc8#
- 1...b4
- 2.Sc4#
- 1...c4
- 2.Qxf2#
- 1...Rf1
- Tries
- 1.Se8?
- threat
- 2.Bxa7#
- 2.Bc7#
- 1...Sc6
- 2.Bc7#
- 1...Sc8
- 2.Bc7#
- 1...d5!
- threat
- 1.Bxg2?
- 1...Rxb2
- 2.Qxc5#
- 1...Rxg2
- 2.Qxc5#
- 1...Rf3
- 2.Qxc5#
- 1...Sc6
- 2.Sc8#
- 1...Rf1
- 2.Qxc5#
- 1...Rc2
- 2.Qxc5#
- 1...Rd2
- 2.Qxc5#
- 1...Re2
- 2.Qxc5#
- 1...Rf4
- 2.Qxc5#
- 1...Rf5
- 2.Qxc5#
- 1...Rf6
- 2.Qxc5#
- 1...Rf7
- 2.Qxc5#
- 1...Rf8
- 2.Qxc5#
- 1...Bb1
- 2.Ra6#
- 1...Sc8
- 2.Sxc8#
- 1...b4
- 2.Sc4#
- 1...c4
- 2.Qxf2#
- 1...e4!
- 1...Rxb2
- 1.Bf3?
- 1...Rxb2
- 2.Qxc5#
- 1...Rxf3
- 2.Qxc5#
- 1...Sc6
- 2.Sc8#
- 1...Rf1
- 2.Qxc5#
- 1...Rc2
- 2.Qxc5#
- 1...Rd2
- 2.Qxc5#
- 1...Re2
- 2.Qxc5#
- 1...Bb1
- 2.Ra6#
- 1...Sc8
- 2.Sxc8#
- 1...b4
- 2.Sc4#
- 1...c4
- 2.Qxf2#
- 1...e4!
- 1...Rxb2
- 1.Bd5?
- 1...Rxb2
- 2.Qxc5#
- 1...Sc6
- 2.Sc8#
- 1...Rf1
- 2.Qxc5#
- 1...Rc2
- 2.Qxc5#
- 1...Rd2
- 2.Qxc5#
- 1...Re2
- 2.Qxc5#
- 1...Rf3
- 2.Qxc5#
- 1...Rf4
- 2.Qxc5#
- 1...Rf5
- 2.Qxc5#
- 1...Rf6
- 2.Qxc5#
- 1...Rf7
- 2.Qxc5#
- 1...Rf8
- 2.Qxc5#
- 1...Bb1
- 2.Ra6#
- 1...Sc8
- 2.Sxc8#
- 1...b4
- 2.Sc4#
- 1...c4
- 2.Qxf2#
- 1...e4!
- 1...Rxb2
- 1.Rb1?
- 1...Rxb2
- 2.Qxc5#
- 1...Sc8
- 2.Sxc8#
- 1...Rf1
- 2.Qxc5#
- 1...Rc2
- 2.Qxc5#
- 1...Rd2
- 2.Qxc5#
- 1...Re2
- 2.Qxc5#
- 1...Rf3
- 2.Qxc5#
- 1...Rf4
- 2.Qxc5#
- 1...Rf5
- 2.Qxc5#
- 1...Rf6
- 2.Qxc5#
- 1...Rf7
- 2.Qxc5#
- 1...Rf8
- 2.Qxc5#
- 1...Sc6
- 2.Sc8#
- 1...b4
- 2.Sc4#
- 1...c4
- 2.Qxf2#
- 1...Bxb1!
- 1...Rxb2
- 1.Rc1?
- 1...Rxb2
- 2.Qxc5#
- 1...Sc8
- 2.Sxc8#
- 1...Rf1
- 2.Qxc5#
- 1...Rc2
- 2.Qxc5#
- 1...Rd2
- 2.Qxc5#
- 1...Re2
- 2.Qxc5#
- 1...Rf3
- 2.Qxc5#
- 1...Rf4
- 2.Qxc5#
- 1...Rf5
- 2.Qxc5#
- 1...Rf6
- 2.Qxc5#
- 1...Rf7
- 2.Qxc5#
- 1...Rf8
- 2.Qxc5#
- 1...Sc6
- 2.Sc8#
- 1...b4
- 2.Sc4#
- 1...c4
- 2.Qxf2#
- 1...Bb1!
- 1...Rxb2
- 1.Rd1?
- 1...Rxb2
- 2.Qxc5#
- 1...Sc8
- 2.Sxc8#
- 1...Rf1
- 2.Qxc5#
- 1...Rc2
- 2.Qxc5#
- 1...Rd2
- 2.Qxc5#
- 1...Re2
- 2.Qxc5#
- 1...Rf3
- 2.Qxc5#
- 1...Rf4
- 2.Qxc5#
- 1...Rf5
- 2.Qxc5#
- 1...Rf6
- 2.Qxc5#
- 1...Rf7
- 2.Qxc5#
- 1...Rf8
- 2.Qxc5#
- 1...Sc6
- 2.Sc8#
- 1...b4
- 2.Sc4#
- 1...c4
- 2.Qxf2#
- 1...Bb1!
- 1...Rxb2
- 1.Re1?
- 1...Rxb2
- 2.Qxc5#
- 1...Sc8
- 2.Sxc8#
- 1...Rf1
- 2.Qxc5#
- 1...Rc2
- 2.Qxc5#
- 1...Rd2
- 2.Qxc5#
- 1...Re2
- 2.Qxc5#
- 1...Rf3
- 2.Qxc5#
- 1...Rf4
- 2.Qxc5#
- 1...Rf5
- 2.Qxc5#
- 1...Rf6
- 2.Qxc5#
- 1...Rf7
- 2.Qxc5#
- 1...Rf8
- 2.Qxc5#
- 1...Sc6
- 2.Sc8#
- 1...b4
- 2.Sc4#
- 1...c4
- 2.Qxf2#
- 1...Bb1!
- 1...Rxb2
- 1.Ra3?
- 1...Rxb2
- 2.Qxc5#
- 1...Sc8
- 2.Sxc8#
- 1...Rf1
- 2.Qxc5#
- 1...Rc2
- 2.Qxc5#
- 1...Rd2
- 2.Qxc5#
- 1...Re2
- 2.Qxc5#
- 1...Rf3
- 2.Qxc5#
- 1...Rf4
- 2.Qxc5#
- 1...Rf5
- 2.Qxc5#
- 1...Rf6
- 2.Qxc5#
- 1...Rf7
- 2.Qxc5#
- 1...Rf8
- 2.Qxc5#
- 1...Bb1
- 2.Ra6#
- 1...Sc6
- 2.Sc8#
- 1...c4
- 2.Qxf2#
- 1...b4!
- 1...Rxb2
- 1.Rxb5+?
- 1...Ka6
- 2.Sxc5#
- 1...Sxb5!
- 1...Ka6
- 1.Rxa7?
- threat
- 2.Sc8#
- 1...Rf8
- 2.Qxc5#
- 1...b4!
- threat
- 1.c4?
- 1...Rxb2
- 2.Qxc5#
- 1...bxc4
- 2.Sxc4#
- 1...Rf1
- 2.Qxc5#
- 1...Rc2
- 2.Qxc5#
- 1...Rd2
- 2.Qxc5#
- 1...Re2
- 2.Qxc5#
- 1...Rf3
- 2.Qxc5#
- 1...Rf4
- 2.Qxc5#
- 1...Rf5
- 2.Qxc5#
- 1...Rf6
- 2.Qxc5#
- 1...Rf7
- 2.Qxc5#
- 1...Rf8
- 2.Qxc5#
- 1...Bb1
- 2.Ra6#
- 1...Sc6
- 2.Sc8#
- 1...Sc8
- 2.Sxc8#
- 1...b4!
- 1...Rxb2
- 1.Se8?
- Keys
- 1.Sxc5!
- 1...Kxa5
- 2.Bc7#
- 1...Kxc5
- 2.Qxf2#
- 1...Rxb2
- 2.Ra6#
- 1...Sc6
- 2.Rxb5#
- 1...Rf1
- 2.Ra6#
- 1...Rc2
- 2.Ra6#
- 1...Rd2
- 2.Ra6#
- 1...Re2
- 2.Ra6#
- 1...Rf3
- 2.Ra6#
- 1...Rf4
- 2.Ra6#
- 1...Rf5
- 2.Ra6#
- 1...Rf6
- 2.Ra6#
- 1...Rf7
- 2.Ra6#
- 1...Rf8
- 2.Ra6#
- 1...Bb1
- 2.Sxd7#
- 1...Sc8
- 2.Rxb5#
- 1...b4
- 2.Sc4#
- 1...Kxa5
- 1.Sxc5!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 14
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- R(b);OGATE,P_SPINP(f)::QAB1(B),XP(f)
- R(b);OGATE,P_SPINP(f),XP(C)::QAB1(B),XP(f)
- R(b);OGATE,P_PINB(J),P_SPINP(f)::QAB1(B),XP(f)
- B(a);::R1(F)
- S(i);N_GUARD::S(G)
- S(i);N_GUARD::S(G),XS(i)
- P(e);N_GUARD::S(G)
- P(f);OGATEB,P_SPINR(b)::QAB(B),XR(b)
- Tries
- Try
- S(G);
- Threat
- DUALS(2)
- Vars
- S(i);::B(J)
- Refutation
- P(j);
- Try
- B(E);XP(c)
- Vars
- R(b);OGATE,P_SPINP(f),XP(C)::QAB1(B),XP(f)
- R(b);OGATE,P_SPINP(f),XB(E)::QAB1(B),XP(f)
- R(b);OGATE,P_SPINP(f)::QAB1(B),XP(f)
- S(i);N_GUARD::S(G)
- R(b);OGATE,P_PINB(J),P_SPINP(f)::QAB1(B),XP(f)
- B(a);::R1(F)
- S(i);N_GUARD::S(G),XS(i)
- P(e);N_GUARD::S(G)
- P(f);OGATEB,P_SPINR(b)::QAB(B),XR(b)
- Refutation
- P(g);
- Try
- B(E);
- Vars
- R(b);OGATE,P_SPINP(f),XP(C)::QAB1(B),XP(f)
- R(b);OGATE,P_SPINP(f),XB(E)::QAB1(B),XP(f)
- S(i);N_GUARD::S(G)
- R(b);OGATE,P_SPINP(f)::QAB1(B),XP(f)
- B(a);::R1(F)
- S(i);N_GUARD::S(G),XS(i)
- P(e);N_GUARD::S(G)
- P(f);OGATEB,P_SPINR(b)::QAB(B),XR(b)
- Refutation
- P(g);
- Try
- B(E);
- Vars
- R(b);OGATE,P_SPINP(f),XP(C)::QAB1(B),XP(f)
- S(i);N_GUARD::S(G)
- R(b);OGATE,P_SPINP(f)::QAB1(B),XP(f)
- R(b);OGATE,P_PINB(J),P_SPINP(f)::QAB1(B),XP(f)
- B(a);::R1(F)
- S(i);N_GUARD::S(G),XS(i)
- P(e);N_GUARD::S(G)
- P(f);OGATEB,P_SPINR(b)::QAB(B),XR(b)
- Refutation
- P(g);
- Try
- R(A);
- Vars
- R(b);OGATE,P_SPINP(f),XP(C)::QAB1(B),XP(f)
- S(i);N_GUARD::S(G),XS(i)
- R(b);OGATE,P_SPINP(f)::QAB1(B),XP(f)
- R(b);OGATE,P_PINB(J),P_SPINP(f)::QAB1(B),XP(f)
- S(i);N_GUARD::S(G)
- P(e);N_GUARD::S(G)
- P(f);OGATEB,P_SPINR(b)::QAB(B),XR(b)
- Refutation
- B(a);XR(A)
- Try
- R(A);
- Vars
- R(b);OGATE,P_SPINP(f),XP(C)::QAB1(B),XP(f)
- S(i);N_GUARD::S(G),XS(i)
- R(b);OGATE,P_SPINP(f)::QAB1(B),XP(f)
- R(b);OGATE,P_PINB(J),P_SPINP(f)::QAB1(B),XP(f)
- S(i);N_GUARD::S(G)
- P(e);N_GUARD::S(G)
- P(f);OGATEB,P_SPINR(b)::QAB(B),XR(b)
- Refutation
- B(a);
- Try
- R(A);
- Vars
- R(b);OGATE,P_SPINP(f),XP(C)::QAB1(B),XP(f)
- S(i);N_GUARD::S(G),XS(i)
- R(b);OGATE,P_SPINP(f)::QAB1(B),XP(f)
- R(b);OGATE,P_PINB(J),P_SPINP(f)::QAB1(B),XP(f)
- S(i);N_GUARD::S(G)
- P(e);N_GUARD::S(G)
- P(f);OGATEB,P_SPINR(b)::QAB(B),XR(b)
- Refutation
- B(a);
- Try
- R(A);
- Vars
- R(b);OGATE,P_SPINP(f),XP(C)::QAB1(B),XP(f)
- S(i);N_GUARD::S(G),XS(i)
- R(b);OGATE,P_SPINP(f)::QAB1(B),XP(f)
- R(b);OGATE,P_PINB(J),P_SPINP(f)::QAB1(B),XP(f)
- S(i);N_GUARD::S(G)
- P(e);N_GUARD::S(G)
- P(f);OGATEB,P_SPINR(b)::QAB(B),XR(b)
- Refutation
- B(a);
- Try
- R(F);
- Vars
- R(b);OGATE,P_SPINP(f),XP(C)::QAB1(B),XP(f)
- S(i);N_GUARD::S(G),XS(i)
- R(b);OGATE,P_SPINP(f)::QAB1(B),XP(f)
- R(b);OGATE,P_PINB(J),P_SPINP(f)::QAB1(B),XP(f)
- B(a);::R1(F)
- S(i);N_GUARD::S(G)
- P(f);OGATEB,P_SPINR(b)::QAB(B),XR(b)
- Refutation
- P(e);
- Try
- R(F);CHECK,XP(e)
- Vars
- K(h);P-FLIGHT,P_SPINB(a)::S(H),XP(f)
- Refutation
- S(i);XR(F)
- Try
- R(F);XS(i)
- Threat
- S(G)
- Vars
- R(b);OGATE,P_PINB(J),P_SPINP(f)::QAB1(B),XP(f)
- Refutation
- P(e);
- Try
- P(D);
- Vars
- R(b);OGATE,P_SPINP(f),XP(C)::QAB1(B),XP(f)
- P(e);XP(D)::S(G),XP(e)
- R(b);OGATE,P_SPINP(f)::QAB1(B),XP(f)
- R(b);OGATE,P_PINB(J),P_SPINP(f)::QAB1(B),XP(f)
- B(a);::R1(F)
- S(i);N_GUARD::S(G)
- S(i);N_GUARD::S(G),XS(i)
- Refutation
- P(e);
- Try
- Actual
- S(H);XP(f)
- Vars
- K(h);P_SPINB(a),S_FLIGHT,XR(F)::B(J)
- K(h);OGATEB,P_SPINP(e),P_SPINR(b),S_FLIGHT,XS(H)::QAB(B),XR(b)
- R(b);XP(C)::R1(F)
- S(i);N_GUARD::R1(F),XP(e)
- R(b);::R1(F)
- R(b);P_PINB(J)::R1(F)
- B(a);::S(H),XP(j)
- P(e);N_GUARD::S(G)
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).