MESON Chess Problem Database
Problem Display
PID: 265190 (n1r1r3/KB5b/3PpQ2/4N1R1/N1pkP2n/7R/4P3/6b1 w - - 0 1)
Krizhanivsky, Vasil Viktorovich
The Problemist, 1994
#2
10 + 9
SOLUTION
- SOUND
- Sets
- 1...Bf2
- 2.Qxf2#
- 1...Bh2
- 2.Qf2#
- 2.e3#
- 1...Be3
- 2.Sf3#
- 1...Bxe4
- 2.Sc6#
- 1...c3
- 2.Rd3#
- 1...Bf2
- Tries
- 1.Rc3?
- threat
- 2.Sf3#
- 1...Sf3
- 2.Sxf3#
- 1...Rc6!
- threat
- 1.Rg4?
- threat
- 2.Sc6#
- 1...Bxe4
- 2.Rxe4#
- 1...Rc6
- 2.Sxc6#
- 1...c3
- 2.Rd3#
- 1...Sf3!
- threat
- 1.Qf3?
- threat
- 2.Qc3#
- 1...Rc6
- 2.Sxc6#
- 1...Be3
- 2.Qxe3#
- 1...c3
- 2.Qd3#
- 1...Sxf3!
- threat
- 1.Rc3?
- Keys
- 1.Qf4!
- threat
- 2.Qd2#
- 1...Bxe4
- 2.Qxe4#
- 1...Rc6
- 2.Sxc6#
- 1...Be3
- 2.Qxe3#
- 1...Bf5
- 2.exf5#
- 1...Sf3
- 2.Sxf3#
- 1...Sf5
- 2.Sf3#
- 2.exf5#
- 1...c3
- 2.Rd3#
- threat
- 1.Qf4!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 3
- REMOVED MATES = 1
- Sets
- B(a);N_GUARD::QAB(H),XB(a)
- B(a);SBLOCK::QAB(H)+S(E),DCHECK
- B(f);SBLOCK,XP(D)::QAB(H)+S(E),DCHECK
- P(b);N_GUARD::R1(B)
- Tries
- Try
- R(B);
- Threat
- QAB(H)+S(E),DCHECK
- Vars
- S(d);::QAB(H)+S(E),DCHECK,XS(d)
- Refutation
- R(h);
- Try
- R(F);
- Threat
- QAB(H)+S(E),DCHECK
- Vars
- B(f);OGATE,P_SPINB(f),XP(D)::R1(F),XB(f)
- R(h);::QAB(H)+S(E),DCHECK,XR(h)
- P(b);N_GUARD::R1(B)
- Refutation
- S(d);
- Try
- Q(H);
- Threat
- QAB1(H)
- Vars
- R(h);N_GUARD::S(E),XR(h)
- B(a);N_GUARD::QAB1(H),XB(a)
- P(b);N_GUARD::QAR1(H)
- Refutation
- S(d);XQ(H)
- Try
- Actual
- Q(H);
- Threat
- QAR2(H)
- Vars
- B(f);OGATE,P_SPINB(f),XP(D)::QAR1(H),XB(f)
- R(h);N_GUARD::S(E),XR(h)
- B(a);N_GUARD::QAB1(H),XB(a)
- B(f);OGATE::QAR(H)+P(D),XB(f)
- S(d);N_GUARD::S(E),XS(d)
- P(b);N_GUARD::R1(B)
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).