MESON Chess Problem Database
Problem Display
PID: 226565 (8/8/2n3p1/5p2/b1k2P2/1R1NP3/6Q1/BK1BN3 w - - 0 1)
Kovalenko, Vladimir
64 Shakhmatnoe obozrenie, 2020
#2
9 + 5
SOLUTION
- SOUND
- Sets
- 1...Bxb3
- 2.Qxc6#
- 1...Bb5
- 2.Rc3#
- 1...Sb4
- 2.Rxb4#
- 1...Sd4
- 2.Rb4#
- 1...Sa5
- 2.Rb4#
- 1...Se5
- 2.Rb4#
- 1...Sa7
- 2.Rb4#
- 1...Se7
- 2.Rb4#
- 1...Sb8
- 2.Rb4#
- 1...Sd8
- 2.Rb4#
- 1...Bxb3
- Tries
- 1.Kc1?
- 1...Bxb3
- 2.Qxc6#
- 1...Sb4
- 2.Rxb4#
- 1...Bb5
- 2.Rc3#
- 1...Sd4
- 2.Rb4#
- 1...Sa5
- 2.Rb4#
- 1...Se5
- 2.Rb4#
- 1...Sa7
- 2.Rb4#
- 1...Se7
- 2.Rb4#
- 1...Sb8
- 2.Rb4#
- 1...Sd8
- 2.Rb4#
- 1...g5!
- 1...Bxb3
- 1.Kb2?
- 1...Bxb3
- 2.Qxc6#
- 1...Sb4
- 2.Rxb4#
- 1...Bb5
- 2.Rc3#
- 1...Sd4
- 2.Rb4#
- 1...Sa5
- 2.Rb4#
- 1...Se5
- 2.Rb4#
- 1...Sa7
- 2.Rb4#
- 1...Se7
- 2.Rb4#
- 1...Sb8
- 2.Rb4#
- 1...Sd8
- 2.Rb4#
- 1...g5!
- 1...Bxb3
- 1.Sc2?
- threat
- 2.Sa3#
- 1...Kxb3
- 2.Qd5#
- 1...Bxb3!
- threat
- 1.Bb2?
- 1...Bxb3
- 2.Qxc6#
- 1...Sb4
- 2.Rxb4#
- 1...Bb5
- 2.Rc3#
- 1...Sd4
- 2.Rb4#
- 1...Sa5
- 2.Rb4#
- 1...Se5
- 2.Rb4#
- 1...Sa7
- 2.Rb4#
- 1...Se7
- 2.Rb4#
- 1...Sb8
- 2.Rb4#
- 1...Sd8
- 2.Rb4#
- 1...g5!
- 1...Bxb3
- 1.Bd4?
- threat
- 2.Sb2#
- 1...Bxb3
- 2.Qxc6#
- 1...Sb4
- 2.Rxb4#
- 1...Sxd4!
- threat
- 1.Bc2?
- 1...Bxb3
- 2.Qxc6#
- 1...Sb4
- 2.Rxb4#
- 1...Bb5
- 2.Rc3#
- 1...Sd4
- 2.Rb4#
- 1...Sa5
- 2.Rb4#
- 1...Se5
- 2.Rb4#
- 1...Sa7
- 2.Rb4#
- 1...Se7
- 2.Rb4#
- 1...Sb8
- 2.Rb4#
- 1...Sd8
- 2.Rb4#
- 1...g5!
- 1...Bxb3
- 1.Bf3?
- threat
- 2.Bd5#
- 2.Qc2#
- 1...Kxb3
- 2.Qa2#
- 1...Sb4
- 2.Rxb4#
- 1...Sd4
- 2.Bd5#
- 2.Rb4#
- 1...Se7
- 2.Rb4#
- 2.Qc2#
- 1...Bxb3!
- threat
- 1.Qh1?
- 1...Bxb3
- 2.Qxc6#
- 1...Sb4
- 2.Rxb4#
- 1...Bb5
- 2.Rc3#
- 1...Sd4
- 2.Rb4#
- 1...Sa5
- 2.Rb4#
- 1...Se5
- 2.Rb4#
- 1...Sa7
- 2.Rb4#
- 1...Se7
- 2.Rb4#
- 1...Sb8
- 2.Rb4#
- 1...Sd8
- 2.Rb4#
- 1...g5!
- 1...Bxb3
- 1.Qf3?
- 1...Bxb3
- 2.Qxc6#
- 1...Sb4
- 2.Rxb4#
- 1...Bb5
- 2.Rc3#
- 1...Sd4
- 2.Rb4#
- 1...Sa5
- 2.Rb4#
- 1...Se5
- 2.Rb4#
- 1...Sa7
- 2.Rb4#
- 1...Se7
- 2.Rb4#
- 1...Sb8
- 2.Rb4#
- 1...Sd8
- 2.Rb4#
- 1...g5!
- 1...Bxb3
- 1.Qe4+?
- 1...Sd4
- 2.Rb4#
- 2.Qxd4#
- 1...fxe4!
- 1...Sd4
- 1.Qa2?
- threat
- 2.Rb4#
- 1...Bxb3
- 2.Qxb3#
- 1...Sb4
- 2.Rxb4#
- 1...Kd5!
- threat
- 1.Kc1?
- Keys
- 1.Bh5!
- 1...Kxb3
- 2.Qa2#
- 1...Bxb3
- 2.Qxc6#
- 1...gxh5
- 2.Qg8#
- 1...Sb4
- 2.Rxb4#
- 1...g5
- 2.Bf7#
- 1...Bb5
- 2.Rc3#
- 1...Sd4
- 2.Rb4#
- 1...Sa5
- 2.Rb4#
- 1...Se5
- 2.Rb4#
- 1...Sa7
- 2.Rb4#
- 1...Se7
- 2.Rb4#
- 1...Sb8
- 2.Rb4#
- 1...Sd8
- 2.Rb4#
- 1...Kxb3
- 1.Bh5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- B(a);N_GUARD,XR(F)::QAR2(E),XS(d)
- B(a);SBLOCK::R1(F)
- S(d);N_GUARD::R1(F),XS(d)
- S(d);N_GUARD::R1(F)
- Tries
- Try
- K(B);P-FLIGHT
- Vars
- B(a);N_GUARD,XR(F)::QAR2(E),XS(d)
- S(d);N_GUARD::R1(F),XS(d)
- B(a);SBLOCK::R1(F)
- S(d);N_GUARD::R1(F)
- Refutation
- P(e);
- Try
- K(B);P-FLIGHT
- Vars
- B(a);N_GUARD,XR(F)::QAR2(E),XS(d)
- S(d);N_GUARD::R1(F),XS(d)
- B(a);SBLOCK::R1(F)
- S(d);N_GUARD::R1(F)
- Refutation
- P(e);
- Try
- S(D);
- Threat
- S(D)
- Vars
- K(b);S_FLIGHT,XR(F)::QAB(E)
- Refutation
- B(a);XR(F)
- Try
- B(A);
- Vars
- B(a);N_GUARD,XR(F)::QAR2(E),XS(d)
- S(d);N_GUARD::R1(F),XS(d)
- B(a);SBLOCK::R1(F)
- S(d);N_GUARD::R1(F)
- Refutation
- P(e);
- Try
- B(A);
- Threat
- S(G)
- Vars
- B(a);N_GUARD,XR(F)::QAR2(E),XS(d)
- S(d);N_GUARD::R1(F),XS(d)
- Refutation
- S(d);XB(A)
- Try
- B(C);
- Vars
- B(a);N_GUARD,XR(F)::QAR2(E),XS(d)
- S(d);N_GUARD::R1(F),XS(d)
- B(a);SBLOCK::R1(F)
- S(d);N_GUARD::R1(F)
- Refutation
- P(e);
- Try
- B(C);
- Threat
- DUALS(2)
- Vars
- K(b);OGATEB,S_FLIGHT,XR(F)::QAB1(E)
- S(d);N_GUARD::R1(F),XS(d)
- Refutation
- B(a);XR(F)
- Try
- Q(E);
- Vars
- B(a);N_GUARD,XR(F)::QAR2(E),XS(d)
- S(d);N_GUARD::R1(F),XS(d)
- B(a);SBLOCK::R1(F)
- S(d);N_GUARD::R1(F)
- Refutation
- P(e);
- Try
- Q(E);
- Vars
- B(a);N_GUARD,XR(F)::QAR2(E),XS(d)
- S(d);N_GUARD::R1(F),XS(d)
- B(a);SBLOCK::R1(F)
- S(d);N_GUARD::R1(F)
- Refutation
- P(e);
- Try
- Q(E);CHECK
- Refutation
- P(c);XQ(E)
- Try
- Q(E);
- Threat
- QAB(E)+R(F),DCHECK
- Vars
- B(a);OGATE,P_SPINB(a),XR(F)::QAB1(E),XB(a)
- S(d);::QAB(E)+R(F),DCHECK,XS(d)
- Refutation
- K(b);S_FLIGHT
- Try
- Actual
- B(C);
- Vars
- K(b);OGATEB,S_FLIGHT,XR(F)::QAB1(E)
- B(a);N_GUARD,SBLOCK,XR(F)::QAR2(E),XS(d)
- P(e);OGATE,XB(C)::QAB(E)
- S(d);N_GUARD::R1(F),XS(d)
- P(e);OGATE::B(C)
- B(a);SBLOCK::R1(F)
- S(d);N_GUARD::R1(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).