MESON Chess Problem Database
Problem Display
PID: 258767 (6NQ/6R1/8/3nPp2/B3kB2/2PnPpP1/8/1K1N4 w - - 0 1)
Vovnejko, Viktor Ivanovich
Szachy, 1979
#2
11 + 5
| 15601 | Albrecht-Leiss-Degener Collection | 2022 |
SOLUTION
- SOUND
- Sets
- 1...Sc1
- 2.Sf2#
- 1...Se1
- 2.Sf2#
- 1...Sb2
- 2.Sf2#
- 1...Sf2
- 2.Sxf2#
- 1...S3b4
- 2.Sf2#
- 1...Sc5
- 2.Sf2#
- 1...Sxe5
- 2.Sf2#
- 1...Sxc3+
- 2.Sxc3#
- 1...Sxe3
- 2.Sf6#
- 1...S5b4
- 2.Sf6#
- 1...Sb6
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sc7
- 2.Sf6#
- 1...Se7
- 2.Sf6#
- 1...f2
- 2.Qh1#
- 1...Sc1
- Tries
- 1.Bc2?
- threat
- 2.Sf2#
- 1...Sxc3+
- 2.Sxc3#
- 1...Sxe3
- 2.Sf6#
- 1...Sb4
- 2.Sf6#
- 1...Sb6
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sc7
- 2.Sf6#
- 1...Se7
- 2.Sf6#
- 1...f2
- 2.Qh1#
- 1...Sxf4!
- threat
- 1.Bc6?
- threat
- 2.Sf6#
- 1...Sxe5
- 2.Sf2#
- 1...Sc1
- 2.Sf2#
- 1...Se1
- 2.Sf2#
- 1...Sb2
- 2.Sf2#
- 1...Sf2
- 2.Sxf2#
- 1...Sb4
- 2.Sf2#
- 1...Sc5
- 2.Sf2#
- 1...f2
- 2.Qh1#
- 1...Sxf4!
- threat
- 1.Rd7?
- 1...Sxc3+
- 2.Sxc3#
- 1...Sxe5
- 2.Sf2#
- 1...Sxe3
- 2.Sf6#
- 2.Rd4#
- 1...S5xf4
- 2.Rd4#
- 1...Sc1
- 2.Sf2#
- 1...Se1
- 2.Sf2#
- 1...Sb2
- 2.Sf2#
- 1...Sf2
- 2.Sxf2#
- 1...S3b4
- 2.Sf2#
- 1...Sc5
- 2.Sf2#
- 1...f2
- 2.Qh1#
- 1...S5b4
- 2.Sf6#
- 2.Rd4#
- 1...Sb6
- 2.Sf6#
- 2.Rd4#
- 1...Sf6
- 2.Sxf6#
- 2.Rd4#
- 1...Sc7
- 2.Sf6#
- 2.Rd4#
- 1...Se7
- 2.Sf6#
- 2.Rd4#
- 1...S3xf4!
- 1...Sxc3+
- 1.Re7?
- 1...Sxc3+
- 2.Sxc3#
- 1...Sxe5
- 2.Sf2#
- 2.Bc2#
- 1...Sxe3
- 2.Sf6#
- 1...S5xf4
- 2.Sf6#
- 1...Sxe7
- 2.Sf6#
- 1...Sc1
- 2.Sf2#
- 1...Se1
- 2.Sf2#
- 1...Sb2
- 2.Sf2#
- 1...Sf2
- 2.Sxf2#
- 1...S3b4
- 2.Sf2#
- 1...Sc5
- 2.Sf2#
- 1...S5b4
- 2.Sf6#
- 1...Sb6
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sc7
- 2.Sf6#
- 1...f2
- 2.Qh1#
- 1...S3xf4!
- 1...Sxc3+
- 1.Bc2?
- Keys
- 1.Rg4!
- 1...Sxc3+
- 2.Sxc3#
- 1...S3xf4
- 2.Bc2#
- 1...Sxe5
- 2.Sf2#
- 1...Sxe3
- 2.Sf6#
- 1...S5xf4
- 2.Bc6#
- 1...fxg4
- 2.Qh7#
- 1...Sc1
- 2.Sf2#
- 1...Se1
- 2.Sf2#
- 1...Sb2
- 2.Sf2#
- 1...Sf2
- 2.Sxf2#
- 1...S3b4
- 2.Sf2#
- 1...Sc5
- 2.Sf2#
- 1...S5b4
- 2.Sf6#
- 1...Sb6
- 2.Sf6#
- 1...Sf6
- 2.Sxf6#
- 1...Sc7
- 2.Sf6#
- 1...Se7
- 2.Sf6#
- 1...f2
- 2.Qh1#
- 1...Sxc3+
- 1.Rg4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(a);N_GUARD,XP(H)::S(B)
- S(d);CHECK,XP(C)::S(B),XS(d)
- S(d);N_GUARD,XP(D)::S(J)
- S(d);N_GUARD::S(J)
- S(d);N_GUARD::S(J),XS(d)
- P(b);OGATEB::QAB(K)
- Tries
- Try
- B(F);P_PINS(a)
- Threat
- S(B)
- Vars
- S(d);CHECK,XP(C)::S(B),XS(d)
- S(d);N_GUARD,XP(D)::S(J)
- S(d);N_GUARD::S(J)
- S(d);N_GUARD::S(J),XS(d)
- P(b);OGATEB::QAB(K)
- Refutation
- S(d);XB(G)
- Try
- B(F);P_PINS(d)
- Threat
- S(J)
- Vars
- S(a);N_GUARD,XP(H)::S(B)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- P(b);OGATEB::QAB(K)
- Refutation
- S(a);XB(G)
- Try
- R(I);
- Vars
- S(d);CHECK,XP(C)::S(B),XS(d)
- S(a);N_GUARD,XP(H)::S(B)
- S(d);OGATE,XB(G)::R1(I)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- P(b);OGATEB::QAB(K)
- Refutation
- S(a);XB(G)
- Try
- R(I);
- Vars
- S(d);CHECK,XP(C)::S(B),XS(d)
- S(d);N_GUARD,XP(D)::S(J)
- S(d);N_GUARD,XB(G)::S(J)
- S(d);N_GUARD,XR(I)::S(J)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(d);N_GUARD::S(J)
- S(d);N_GUARD::S(J),XS(d)
- P(b);OGATEB::QAB(K)
- Refutation
- S(a);XB(G)
- Try
- Actual
- R(I);
- Vars
- S(d);CHECK,XP(C)::S(B),XS(d)
- S(a);OGATEB,P_SPINS(a),XB(G)::B(F)
- S(a);N_GUARD,XP(H)::S(B)
- S(d);N_GUARD,XP(D)::S(J)
- S(d);OGATEB,P_SPINS(d),XB(G)::B(F)
- P(e);OGATEB,XR(I)::QAB(K)
- S(a);N_GUARD::S(B)
- S(a);N_GUARD::S(B),XS(a)
- S(d);N_GUARD::S(J)
- S(d);N_GUARD::S(J),XS(d)
- P(b);OGATEB::QAB(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).