MESON Chess Problem Database
Problem Display
PID: 260963 (3n2r1/2P1R3/pQP2p1n/2PkPp2/3N1R2/b1pK1p1r/5B1p/7B w - - 0 1)
Witt, Andreas
Neue Zurcher Zeitung, 2009
#2
11 + 12
| 6490 | yacpdb | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Rh4
- 2.Bxf3#
- 1...Rh5
- 2.Bxf3#
- 1...Rg1
- 2.cxd8Q#
- 2.cxd8R#
- 1...Rg2
- 2.cxd8Q#
- 2.cxd8R#
- 1...Rg3
- 2.cxd8Q#
- 2.cxd8R#
- 1...Rg4
- 2.cxd8Q#
- 2.cxd8R#
- 1...Rg5
- 2.cxd8Q#
- 2.cxd8R#
- 1...Rg6
- 2.cxd8Q#
- 2.cxd8R#
- 1...Rg7
- 2.cxd8Q#
- 2.cxd8R#
- 1...Bxc5
- 2.Qb3#
- 1...Sxc6
- 2.Qxc6#
- 1...fxe5
- 2.Rd7#
- 1...Rh4
- Tries
- 1.Sc2?
- threat
- 2.Se3#
- 2.Rd4#
- 1...Bxc5
- 2.Qxc5#
- 1...Sxc6
- 2.Se3#
- 2.Qb3#
- 1...fxe5
- 2.Se3#
- 1...Rh4
- 2.Se3#
- 2.Bxf3#
- 1...Rg4
- 2.Se3#
- 2.cxd8Q#
- 2.cxd8R#
- 1...Bc1
- 2.Sb4#
- 2.Rd4#
- 1...Sg4
- 2.Rd4#
- 1...Se6!
- threat
- 1.Se2?
- threat
- 2.Sxc3#
- 2.Rd4#
- 1...Bxc5
- 2.Sxc3#
- 2.Qxc5#
- 1...Sxc6
- 2.Sxc3#
- 2.Qb3#
- 1...fxe5
- 2.Sxc3#
- 1...Rh4
- 2.Sxc3#
- 2.Bxf3#
- 1...Rg4
- 2.Sxc3#
- 2.cxd8Q#
- 2.cxd8R#
- 1...Bb2
- 2.Rd4#
- 1...Bb4
- 2.Rd4#
- 1...c2
- 2.Sc3#
- 2.Rd4#
- 1...Se6!
- threat
- 1.Sb5?
- threat
- 2.Sxc3#
- 2.Rd4#
- 1...Bxc5
- 2.Sxc3#
- 2.Qxc5#
- 1...Sxc6
- 2.Sxc3#
- 1...axb5
- 2.Rd4#
- 1...fxe5
- 2.Sxc3#
- 1...Rh4
- 2.Sxc3#
- 2.Bxf3#
- 1...Rg4
- 2.Sxc3#
- 2.cxd8Q#
- 2.cxd8R#
- 1...Bb2
- 2.Rd4#
- 1...Bb4
- 2.Rd4#
- 1...c2
- 2.Sc3#
- 2.Rd4#
- 1...Se6!
- threat
- 1.Qxa6?
- threat
- 2.Qc4#
- 1...Kxc5
- 2.Qb5#
- 2.Qa5#
- 1...Se6!
- threat
- 1.c8Q?
- threat
- 2.Qd7#
- 1...Bxc5
- 2.Qb3#
- 1...Se6
- 2.Qxe6#
- 1...Sb7
- 2.Qe6#
- 1...Sdf7
- 2.Qe6#
- 1...Shf7!
- threat
- 1.Sc2?
- Keys
- 1.Sxf3!
- threat
- 2.Rd4#
- 1...Rxf3+
- 2.Bxf3#
- 1...Bxc5
- 2.Qxc5#
- 1...Sxc6
- 2.Qb3#
- 1...fxe5
- 2.Rxe5#
- 1...Rh4
- 2.Sg5#
- 1...Rg4
- 2.cxd8Q#
- 2.cxd8R#
- 1...Se6
- 2.Rd7#
- threat
- 1.Sxf3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 4
- ADDED MATES = 2
- REMOVED MATES = 1
- Sets
- R(e);N_GUARD::B(A),XP(d)
- R(l);N_GUARD::PXS(k)=Q
- R(l);N_GUARD,N_SPINP(d)::PXS(k)=Q
- B(b);SBLOCK,XP(F)::QAB(H)
- S(k);OGATE,XP(I)::QAB1(H),XS(k)
- P(i);SBLOCK,XP(G)::R(K)
- Tries
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- B(b);OGATE,XP(F)::QAR1(H),XB(b)
- P(i);XP(G)::S(D)
- S(j);::R1(E)
- Refutation
- S(k);
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- P(i);XP(G)::S(D),XP(c)
- B(b);::R1(E)
- Refutation
- S(k);
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- S(k);XP(I)::S(D),XP(c)
- P(h);XS(D)::R1(E)
- P(i);XP(G)::S(D),XP(c)
- B(b);::R1(E)
- Refutation
- S(k);
- Try
- Q(H);XP(h)
- Threat
- QAB1(H)
- Refutation
- S(k);
- Try
- P(J);
- Threat
- QAR2(J)
- Vars
- B(b);SBLOCK,XP(F)::QAB(H)
- S(k);N_GUARD::QAB1(J),XS(k)
- S(k);N_GUARD::QAB1(J)
- Refutation
- S(j);
- Try
- Actual
- S(D);P_SPINS(D),XP(d)
- Threat
- R1(E)
- Vars
- R(e);CHECK,OGATE,P_SPINR(e),XS(D)::B(A),XR(e)
- B(b);OGATE,XP(F)::QAR1(H),XB(b)
- S(k);SBLOCK,XP(I)::QAB(H)
- P(i);OGATE,XP(G)::R1(K),XP(i)
- R(e);N_PINS(D)::B(A)+S(D)
- R(l);N_GUARD::PXS(k)=Q
- S(k);SBLOCK::R(K)
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).