MESON Chess Problem Database
Problem Display
PID: 237789 (3K4/2PP2p1/p7/1R1Nk1P1/1B4Qn/2P5/qN1r2b1/1Bb3r1 w - - 0 1)
Goldschmeding, Cornelis
Arbejder-Skak, 1959
#2
11 + 9
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Qxb1
- 2.Sc4#
- 1...Qc4
- 2.Sxc4#
- 1...Qxd5
- 2.Sc4#
- 1...Qa1
- 2.Sc4#
- 1...Qa3
- 2.Sc4#
- 1...Qa4
- 2.Sc4#
- 1...Qa5
- 2.Sc4#
- 1...Rc2
- 2.Sd3#
- 1...Re2
- 2.Sd3#
- 1...Rf2
- 2.Sd3#
- 1...Rd3
- 2.Sxd3#
- 1...Rd4
- 2.cxd4#
- 1...Rxd5
- 2.Sd3#
- 1...Bf1
- 2.Qe4#
- 1...Bh3
- 2.Qe4#
- 1...Be4
- 2.Qxe4#
- 1...Bxd5
- 2.Qe4#
- 1...Sf3
- 2.Qf5#
- 2.Qe4#
- 1...Sf5
- 2.Qxf5#
- 1...Sg6
- 2.Qf5#
- 1...Qxb1
- Tries
- 1.Ke7?
- threat
- 2.Bd6#
- 2.Qe6#
- 2.Qg3#
- 2.Qf4#
- 1...Sf5+
- 2.Qxf5#
- 1...Qxb1
- 2.Sc4#
- 2.Bd6#
- 2.Qe6#
- 2.Qf4#
- 1...Qxd5
- 2.Sc4#
- 2.Bd6#
- 2.Qg3#
- 1...Rxb2
- 2.Bd6#
- 2.Qe6#
- 2.Qd4#
- 1...Rxd5
- 2.Sd3#
- 2.Bd6#
- 2.Qd4#
- 1...Bxd5
- 2.Bd6#
- 2.Qe4#
- 1...axb5
- 2.Qe6#
- 1...Qc4
- 2.Sxc4#
- 2.Bd6#
- 2.Qe6#
- 1...Qa3
- 2.Sc4#
- 2.Qe6#
- 2.Qg3#
- 2.Qf4#
- 1...Rf1
- 2.Bd6#
- 2.Qe6#
- 1...Rdd1
- 2.Bd6#
- 2.Qe6#
- 1...Rc2
- 2.Sd3#
- 2.Bd6#
- 2.Qe6#
- 1...Re2
- 2.Sd3#
- 2.Bd6#
- 2.Qe6#
- 2.Qd4#
- 1...Rf2
- 2.Sd3#
- 2.Bd6#
- 2.Qe6#
- 2.Qd4#
- 1...Rd3
- 2.Sxd3#
- 2.Bd6#
- 2.Qe6#
- 1...Rd4
- 2.Bd6#
- 2.Qe6#
- 2.Qxd4#
- 2.cxd4#
- 1...Bf1
- 2.Bd6#
- 2.Qe6#
- 2.Qe4#
- 2.Qf4#
- 1...Bh1
- 2.Bd6#
- 2.Qe6#
- 2.Qf4#
- 1...Bf3
- 2.Bd6#
- 2.Qe6#
- 2.Qf4#
- 1...Bh3
- 2.Bd6#
- 2.Qe4#
- 2.Qf4#
- 1...Be4
- 2.Bd6#
- 2.Qe6#
- 2.Qxe4#
- 2.Qf4#
- 1...Sg6+!
- threat
- 1.Se3+?
- 1...Qd5
- 2.Sbc4#
- 2.Sec4#
- 1...Rd5
- 2.Sd3#
- 1...Bd5
- 2.Qe4#
- 1...axb5!
- 1...Qd5
- 1.Sb6+?
- 1...Qd5
- 2.S2c4#
- 2.S6c4#
- 1...Rd5
- 2.Sd3#
- 1...Bd5
- 2.Qe4#
- 1...axb5!
- 1...Qd5
- 1.Sf6+?
- 1...Qd5
- 2.Sc4#
- 1...Rd5
- 2.Sd3#
- 1...Bd5
- 2.Qe4#
- 1...axb5!
- 1...Qd5
- 1.Se7+?
- 1...Qd5
- 2.Sc4#
- 2.Sc6#
- 1...Rd5
- 2.Sd3#
- 2.Sc6#
- 1...Bd5
- 2.Sc6#
- 2.Qe4#
- 1...axb5!
- 1...Qd5
- 1.Qe2+?
- 1...Be4
- 2.Qxe4#
- 1...Rxe2!
- 1...Be4
- 1.Ke7?
- Keys
- 1.Rb6!
- threat
- 2.Qe6#
- 1...Kxd5
- 2.Qe6#
- 1...Qxd5
- 2.Qg3#
- 1...Rxd5
- 2.Re6#
- 1...Bxd5
- 2.Bd6#
- 1...Bh3
- 2.Qe4#
- 1...Sf5
- 2.Qxf5#
- threat
- 1.Rb6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 3
- ADDED MATES = 1
- REMOVED MATES = 14
- Sets
- Q(c);N_GUARD,XB(A)::S(B)
- Q(c);N_GUARD::S(B),XQ(c)
- Q(c);N_GUARD,P_PINP(J),P_SPINQ(c),XS(G)::S(B)
- Q(c);N_GUARD::S(B)
- Q(c);N_GUARD,P_PINP(I)::S(B)
- R(d);N_GUARD::S(B)
- R(d);N_GUARD::S(B),XR(d)
- R(d);OGATE::P(C),XR(d)
- R(d);N_GUARD,P_PINP(J),P_SPINR(d),XS(G)::S(B)
- B(e);N_GUARD::QAR1(E)
- B(e);N_GUARD::QAR1(E),XB(e)
- B(e);N_GUARD,P_SPINB(e),XS(G)::QAR1(E)
- S(f);N_GUARD::QAR1(E),XS(f)
- S(f);N_GUARD::QAR1(E)
- Tries
- Try
- K(K);S_FLIGHT
- Threat
- DUALS(4)
- Vars
- S(f);CHECK,N_GUARD::QAR1(E),XS(f)
- P(h);XR(F)::QAR1(E)
- Refutation
- S(f);CHECK
- Try
- S(G);CHECK,P_SPINP(J)
- Vars
- R(d);P_SPINR(d)::S(B)
- B(e);N_PINP(J),P_SPINB(e)::QAR1(E)
- Refutation
- P(h);XR(F)
- Try
- S(G);CHECK,P_SPINP(J)
- Vars
- R(d);P_SPINR(d)::S(B)
- B(e);N_PINP(J),P_SPINB(e)::QAR1(E)
- Refutation
- P(h);XR(F)
- Try
- S(G);CHECK,P_SPINP(J)
- Vars
- Q(c);P_SPINQ(c)::S(B)
- R(d);P_SPINR(d)::S(B)
- B(e);N_PINP(J),P_SPINB(e)::QAR1(E)
- Refutation
- P(h);XR(F)
- Try
- S(G);CHECK,P_SPINP(J)
- Refutation
- P(h);XR(F)
- Try
- Q(E);CHECK
- Vars
- B(e);N_GUARD,P_SPINB(e)::QAR1(E),XB(e)
- Refutation
- R(d);XQ(E)
- Try
- Actual
- R(F);
- Threat
- QAR1(E)
- Vars
- K(g);P-FLIGHT,XS(G)::QAB1(E)
- Q(c);P_PINP(J),SBLOCK,XS(G)::QAB(E)
- R(d);P_PINP(J),SBLOCK,XS(G)::R1(F)
- B(e);SBLOCK,XS(G)::B(D)
- B(e);N_GUARD::QAR1(E)
- S(f);N_GUARD::QAR1(E),XS(f)
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).