MESON Chess Problem Database
Problem Display
PID: 175204 (1rqNr1b1/7Q/3p1P2/1P1k4/3PN1P1/1PpK1R2/6B1/8 w - - 0 1)
Willemsen, HA
The Times, 1902
#2
11 + 7
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qxg4
- 2.Sxc3#
- 1...Qa6
- 2.Sxc3#
- 1...Qe6
- 2.Sxc3#
- 1...Qb7
- 2.Sxc3#
- 1...Qd7
- 2.Sxc3#
- 1...Qc4+
- 2.bxc4#
- 1...Rxe4
- 2.Qxe4#
- 1...Qxg4
- Tries
- 1.Sd2?
- threat
- 2.Rf5#
- 1...Qf5+
- 2.Rxf5#
- 1...Qc4+
- 2.bxc4#
- 1...Re3+
- 2.Rxe3#
- 1...Rxd8
- 2.Re3#
- 2.Qe4#
- 1...Re4
- 2.Qxe4#
- 1...Qxd8!
- threat
- 1.Sf2?
- threat
- 2.Rf5#
- 1...Qf5+
- 2.Rxf5#
- 1...Qc4+
- 2.bxc4#
- 1...Re3+
- 2.Rxe3#
- 1...Rxd8
- 2.Re3#
- 2.Qe4#
- 1...Re4
- 2.Qxe4#
- 1...Qxd8!
- threat
- 1.Sg3?
- threat
- 2.Rf5#
- 1...Qf5+
- 2.Rxf5#
- 1...Qc4+
- 2.bxc4#
- 1...Re3+
- 2.Rxe3#
- 1...Rxd8
- 2.Re3#
- 2.Qe4#
- 1...Re4
- 2.Qxe4#
- 1...Qxd8!
- threat
- 1.Sc5?
- threat
- 2.Rf5#
- 1...Qf5+
- 2.Rxf5#
- 1...Re3+
- 2.Rxe3#
- 1...Re4
- 2.Qxe4#
- 1...dxc5!
- threat
- 1.Rf5+?
- 1...Re5
- 2.Sd2#
- 2.Sf2#
- 2.Sxc3#
- 2.Sg3#
- 2.Sc5#
- 2.Sg5#
- 1...Qxf5!
- 1...Re5
- 1.Qxg8+?
- 1...Qe6
- 2.Sxc3#
- 2.Rf5#
- 1...Re6
- 2.Rf5#
- 1...Rxg8!
- 1...Qe6
- 1.Qb7+?
- 1...Qxb7
- 2.Sxc3#
- 1...Qc6
- 2.Sxc3#
- 2.Qxc6#
- 1...Rxb7!
- 1...Qxb7
- 1.Qf7+?
- 1...Qe6
- 2.Sxc3#
- 2.Rf5#
- 1...Re6
- 2.Rf5#
- 1...Bxf7!
- 1...Qe6
- 1.Sd2?
- Keys
- 1.Sg5!
- threat
- 2.Rf5#
- 1...Qf5+
- 2.Rxf5#
- 1...Qc4+
- 2.bxc4#
- 1...Re3+
- 2.Rxe3#
- 1...Re4
- 2.Qxe4#
- threat
- 1.Sg5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 5
- Sets
- Q(e);N_GUARD,XP(G)::S(F),XP(a)
- Q(e);N_GUARD,P_PINP(H)::S(F),XP(a)
- Q(e);N_GUARD::S(F),XP(a)
- Q(e);CHECK,OGATE::P(B),XQ(e)
- R(f);OGATE,XS(F)::QAB1(J),XR(f)
- Tries
- Try
- S(F);
- Threat
- B(A)+R(D),DCHECK
- Vars
- Q(e);CHECK::B(A)+R(D),DCHECK,XQ(e)
- Q(e);CHECK,OGATE::P(B),XQ(e)
- R(f);CHECK,N_GUARD::B(A)+R(D),XR(f)
- R(f);N_GUARD::QAB1(J),XR(f)
- Refutation
- Q(e);XS(K)
- Try
- S(F);
- Threat
- B(A)+R(D),DCHECK
- Vars
- Q(e);CHECK::B(A)+R(D),DCHECK,XQ(e)
- Q(e);CHECK,OGATE::P(B),XQ(e)
- R(f);CHECK,N_GUARD::B(A)+R(D),XR(f)
- R(f);N_GUARD::QAB1(J),XR(f)
- Refutation
- Q(e);XS(K)
- Try
- S(F);
- Threat
- B(A)+R(D),DCHECK
- Vars
- Q(e);CHECK::B(A)+R(D),DCHECK,XQ(e)
- Q(e);CHECK,OGATE::P(B),XQ(e)
- R(f);CHECK,N_GUARD::B(A)+R(D),XR(f)
- R(f);N_GUARD::QAB1(J),XR(f)
- Refutation
- Q(e);XS(K)
- Try
- S(F);
- Threat
- B(A)+R(D),DCHECK
- Vars
- Q(e);CHECK::B(A)+R(D),DCHECK,XQ(e)
- R(f);CHECK,N_GUARD::B(A)+R(D),XR(f)
- R(f);N_GUARD::QAB1(J),XR(f)
- Refutation
- P(c);XS(F)
- Try
- R(D);CHECK
- Refutation
- Q(e);P_PINS(F),XR(D)
- Try
- Q(J);CHECK,XB(g)
- Vars
- R(f);P_SPINR(f)::R(D)
- Refutation
- R(f);XQ(J)
- Try
- Q(J);CHECK
- Vars
- Q(e);XQ(J)::S(F),XP(a)
- Refutation
- R(d);XQ(J)
- Try
- Q(J);CHECK
- Vars
- R(f);P_SPINR(f)::R(D)
- Refutation
- B(g);XQ(J)
- Try
- Actual
- S(F);
- Threat
- B(A)+R(D),DCHECK
- Vars
- Q(e);CHECK::B(A)+R(D),DCHECK,XQ(e)
- Q(e);CHECK,OGATE::P(B),XQ(e)
- R(f);CHECK,N_GUARD::B(A)+R(D),XR(f)
- R(f);N_GUARD::QAB1(J),XR(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).