MESON Chess Problem Database
Problem Display
PID: 122402 (8/5pQ1/3KP3/Np2n1r1/2Bkb1RN/2r1b2R/5Pn1/B2q4 w - - 0 1)
van Woerden, Jan
Match: Netherlands - Poland, 1990
#2
10 + 10
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qc2
- 2.Sf3#
- 1...Qb3
- 2.Sf3#
- 1...Qf3
- 2.Sxf3#
- 1...Qa4
- 2.Sf3#
- 1...Qxa1
- 2.Sf3#
- 1...Qb1
- 2.Sf3#
- 1...Qc1
- 2.Sf3#
- 1...Qe1
- 2.Sf3#
- 1...Qf1
- 2.Sf3#
- 1...Qg1
- 2.Sf3#
- 1...Qh1
- 2.Sf3#
- 1...Qd2
- 2.Sf3#
- 1...Qd3
- 2.Sf3#
- 1...Rxg4
- 2.Qxe5#
- 1...Rf5
- 2.Sxf5#
- 1...Rg6
- 2.Sf5#
- 2.Qxe5#
- 1...Rxg7
- 2.Sf5#
- 1...Bc1
- 2.Bxc3#
- 1...Bd2
- 2.Rd3#
- 1...Bxf2
- 2.Bxc3#
- 1...Bf4
- 2.Bxc3#
- 1...Se1
- 2.fxe3#
- 1...Sf4
- 2.fxe3#
- 1...Sxh4
- 2.fxe3#
- 1...fxe6
- 2.Qa7#
- 1...f5
- 2.Qxe5#
- 2.Qa7#
- 1...f6
- 2.Qa7#
- 1...Qc2
- Tries
- 1.Be2?
- threat
- 2.Sf3#
- 2.Sc6#
- 1...Qxa1
- 2.Sf3#
- 1...Rxg4
- 2.Qxe5#
- 1...Rxg7
- 2.Sf5#
- 1...Bxf2
- 2.Sc6#
- 2.Bxc3#
- 1...Sxh4
- 2.Sc6#
- 2.fxe3#
- 1...Qd3
- 2.Sf3#
- 1...Rf5
- 2.Sxf5#
- 2.Sc6#
- 1...Bf4
- 2.Bxc3#
- 1...Se1
- 2.Sc6#
- 2.fxe3#
- 1...Sf4
- 2.fxe3#
- 1...f6
- 2.Qa7#
- 1...Qxe2!
- threat
- 1.Rxe3?
- threat
- 2.Bxc3#
- 2.Rexe4#
- 2.Rgxe4#
- 1...Qxg4
- 2.Bxc3#
- 1...Qxa1
- 2.Sf3#
- 2.Rexe4#
- 2.Rgxe4#
- 1...Rxg4
- 2.Bxc3#
- 2.Qxe5#
- 1...bxc4
- 2.Sc6#
- 2.Bxc3#
- 2.Rgxe4#
- 1...Qc2
- 2.Sf3#
- 1...Qe2
- 2.Bxc3#
- 2.Rgxe4#
- 1...Qb3
- 2.Sf3#
- 2.Rd3#
- 2.Rexe4#
- 2.Rgxe4#
- 1...Qf3
- 2.Sxf3#
- 2.Bxc3#
- 1...Qb1
- 2.Sf3#
- 2.Bxc3#
- 1...Qc1
- 2.Sf3#
- 2.Rd3#
- 2.Rexe4#
- 2.Rgxe4#
- 1...Qe1
- 2.Sf3#
- 2.Rd3#
- 2.Rgxe4#
- 1...Qd2
- 2.Sf3#
- 2.Rexe4#
- 2.Rgxe4#
- 1...Qd3
- 2.Sf3#
- 2.Rxd3#
- 1...Sf4
- 2.Bxc3#
- 1...b4
- 2.Rexe4#
- 2.Rgxe4#
- 1...f5
- 2.Bxc3#
- 2.Qxe5#
- 2.Qa7#
- 1...Sxe3!
- threat
- 1.Rxg5?
- threat
- 2.Qxe5#
- 1...Bf4
- 2.Bxc3#
- 1...f6
- 2.Qa7#
- 1...bxc4!
- threat
- 1.Be2?
- Keys
- 1.Bxb5!
- threat
- 2.Sc6#
- 1...Qxg4
- 2.Sb3#
- 1...Qxa1
- 2.Sf3#
- 1...Rxg4
- 2.Qxe5#
- 1...Rxg7
- 2.Sf5#
- 1...Bf4
- 2.Bxc3#
- 1...Sf4
- 2.fxe3#
- 1...f6
- 2.Qa7#
- threat
- 1.Bxb5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 19
- Sets
- Q(a);N_GUARD::S(F)
- Q(a);N_GUARD::S(F),XQ(a)
- Q(a);N_GUARD,N_SPINR(c),XB(A)::S(F)
- R(i);N_GUARD,N_SPINB(f),XR(E)::QAB1(J),XS(h)
- R(i);N_GUARD::S(F),XR(i)
- R(i);N_GUARD,N_SPINS(h),XQ(J)::S(F)
- B(d);::B(A),XR(c)
- B(d);OGATE::R1(C)
- B(d);XP(B)::B(A),XR(c)
- B(d);N_SPINB(f)::B(A),XR(c)
- S(b);N_GUARD::P(B),XB(d)
- S(b);N_GUARD,N_SPINB(f)::P(B),XB(d)
- S(b);N_GUARD,XS(F)::P(B),XB(d)
- P(j);OGATE,XP(I)::QAB(J)
- P(j);N_SPINS(h),OGATE::QAB(J)
- Tries
- Try
- B(D);
- Threat
- DUALS(2)
- Vars
- Q(a);N_SPINR(c),XB(A)::S(F)
- R(i);N_GUARD,N_SPINB(f),XR(E)::QAB1(J),XS(h)
- R(i);N_GUARD,N_SPINS(h),XQ(J)::S(F)
- Q(a);::S(F)
- B(d);N_SPINB(f)::B(A),XR(c)
- S(b);N_GUARD,N_SPINB(f)::P(B),XB(d)
- P(j);N_SPINS(h),OGATE::QAB(J)
- Refutation
- Q(a);XB(D)
- Try
- R(C);XB(d)
- Threat
- DUALS(3)
- Vars
- Q(a);N_SPINB(f),XR(E)::B(A),XR(c)
- Q(a);N_GUARD::S(F)
- S(b);N_SPINB(f)::B(A),XR(c)
- Refutation
- S(b);XR(C)
- Try
- R(E);N_PINB(f),XR(i)
- Threat
- QAB1(J),XS(h)
- Vars
- B(d);::B(A),XR(c)
- P(j);N_SPINS(h),OGATE::QAB(J)
- Refutation
- P(g);XB(D)
- Try
- Actual
- B(D);XP(g)
- Threat
- S(G)
- Vars
- Q(a);N_GUARD,N_SPINB(f),XR(E)::S(G)
- Q(a);N_GUARD,N_SPINR(c),XB(A)::S(F)
- R(i);N_GUARD,N_SPINB(f),XR(E)::QAB1(J),XS(h)
- R(i);N_GUARD,N_SPINS(h),XQ(J)::S(F)
- B(d);N_SPINB(f)::B(A),XR(c)
- S(b);N_GUARD,N_SPINB(f)::P(B),XB(d)
- P(j);N_SPINS(h),OGATE::QAB(J)
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).