MESON Chess Problem Database
Problem Display
PID: 178015 (7B/5B2/R3N2P/4Pk2/4ppn1/5n2/8/2K2QR1 w - - 0 1)
Melnichenko, Viktor Oleksandrovich
Probleemblad, 1979
#2
9 + 5
SOLUTION
- SOUND
- Sets
- 1...Se1
- 2.Qxf4#
- 1...Sxg1
- 2.Qxf4#
- 1...Sd2
- 2.Qxf4#
- 1...Sfh2
- 2.Qxf4#
- 1...Sd4
- 2.Qxf4#
- 1...Sh4
- 2.Qxf4#
- 1...Sfxe5
- 2.Qxf4#
- 1...Sg5
- 2.Sd4#
- 2.Qxf4#
- 1...Sf2
- 2.Bg6#
- 1...Sgh2
- 2.Bg6#
- 1...Se3
- 2.Bg6#
- 1...Sgxe5
- 2.Sg7#
- 1...Sxh6
- 2.Bg6#
- 1...e3
- 2.Qd3#
- 1...Se1
- Tries
- 1.Kb2?
- 1...Sxg1
- 2.Qxf4#
- 1...Sfxe5
- 2.Qxf4#
- 1...Sgxe5
- 2.Sg7#
- 1...Sxh6
- 2.Bg6#
- 1...e3
- 2.Qd3#
- 2.Qb1#
- 1...Se1
- 2.Qxf4#
- 1...Sd2
- 2.Qxf4#
- 1...Sfh2
- 2.Qxf4#
- 1...Sd4
- 2.Qxf4#
- 1...Sh4
- 2.Qxf4#
- 1...Sg5
- 2.Sd4#
- 2.Qxf4#
- 1...Sf2
- 2.Bg6#
- 1...Sgh2
- 2.Bg6#
- 1...Se3
- 2.Bg6#
- 1...Sf6!
- 1...Sxg1
- 1.Bh5?
- 1...Sxg1
- 2.Qxf4#
- 1...Sfxe5
- 2.Qxf4#
- 1...Sgxe5
- 2.Sg7#
- 1...Sxh6
- 2.Bg6#
- 1...e3
- 2.Qd3#
- 1...Se1
- 2.Qxf4#
- 1...Sd2
- 2.Qxf4#
- 1...Sfh2
- 2.Qxf4#
- 1...Sd4
- 2.Qxf4#
- 1...Sh4
- 2.Qxf4#
- 1...Sg5
- 2.Sd4#
- 2.Qxf4#
- 1...Sf2
- 2.Bg6#
- 1...Sgh2
- 2.Bg6#
- 1...Se3
- 2.Bg6#
- 1...Sf6!
- 1...Sxg1
- 1.Be8?
- 1...Sxg1
- 2.Qxf4#
- 1...Sfxe5
- 2.Qxf4#
- 1...Sgxe5
- 2.Sg7#
- 1...Sxh6
- 2.Bg6#
- 1...e3
- 2.Qd3#
- 1...Se1
- 2.Qxf4#
- 1...Sd2
- 2.Qxf4#
- 1...Sfh2
- 2.Qxf4#
- 1...Sd4
- 2.Qxf4#
- 1...Sh4
- 2.Qxf4#
- 1...Sg5
- 2.Sd4#
- 2.Qxf4#
- 1...Sf2
- 2.Bg6#
- 1...Sgh2
- 2.Bg6#
- 1...Se3
- 2.Bg6#
- 1...Sf6!
- 1...Sxg1
- 1.Bf6?
- threat
- 2.Sg7#
- 1...e3
- 2.Qd3#
- 1...Sxf6!
- threat
- 1.Rg2?
- 1...Sfxe5
- 2.Qxf4#
- 1...Sgxe5
- 2.Sg7#
- 1...Sxh6
- 2.Bg6#
- 1...e3
- 2.Qd3#
- 1...Se1
- 2.Qxf4#
- 1...Sg1
- 2.Qxf4#
- 1...Sd2
- 2.Qxf4#
- 1...Sfh2
- 2.Qxf4#
- 1...Sd4
- 2.Qxf4#
- 1...Sh4
- 2.Qxf4#
- 1...Sg5
- 2.Sd4#
- 2.Qxf4#
- 1...Sf2
- 2.Bg6#
- 1...Sgh2
- 2.Bg6#
- 1...Se3
- 2.Bg6#
- 1...Sf6!
- 1...Sfxe5
- 1.Rb6?
- 1...Sxg1
- 2.Qxf4#
- 1...Sfxe5
- 2.Qxf4#
- 1...Sgxe5
- 2.Sg7#
- 1...Sxh6
- 2.Bg6#
- 1...e3
- 2.Qd3#
- 1...Se1
- 2.Qxf4#
- 1...Sd2
- 2.Qxf4#
- 1...Sfh2
- 2.Qxf4#
- 1...Sd4
- 2.Qxf4#
- 1...Sh4
- 2.Qxf4#
- 1...Sg5
- 2.Sd4#
- 2.Qxf4#
- 1...Sf2
- 2.Bg6#
- 1...Sgh2
- 2.Bg6#
- 1...Se3
- 2.Bg6#
- 1...Sf6!
- 1...Sxg1
- 1.Rc6?
- 1...Sxg1
- 2.Qxf4#
- 1...Sfxe5
- 2.Qxf4#
- 1...Sgxe5
- 2.Sg7#
- 1...Sxh6
- 2.Bg6#
- 1...e3
- 2.Qd3#
- 1...Se1
- 2.Qxf4#
- 1...Sd2
- 2.Qxf4#
- 1...Sfh2
- 2.Qxf4#
- 1...Sd4
- 2.Qxf4#
- 1...Sh4
- 2.Qxf4#
- 1...Sg5
- 2.Sd4#
- 2.Qxf4#
- 1...Sf2
- 2.Bg6#
- 1...Sgh2
- 2.Bg6#
- 1...Se3
- 2.Bg6#
- 1...Sf6!
- 1...Sxg1
- 1.Rd6?
- 1...Sxg1
- 2.Qxf4#
- 1...Sfxe5
- 2.Qxf4#
- 1...Sgxe5
- 2.Sg7#
- 1...Sxh6
- 2.Bg6#
- 1...e3
- 2.Qd3#
- 1...Se1
- 2.Qxf4#
- 1...Sd2
- 2.Qxf4#
- 1...Sfh2
- 2.Qxf4#
- 1...Sd4
- 2.Qxf4#
- 1...Sh4
- 2.Qxf4#
- 1...Sg5
- 2.Sd4#
- 2.Qxf4#
- 1...Sf2
- 2.Bg6#
- 1...Sgh2
- 2.Bg6#
- 1...Se3
- 2.Bg6#
- 1...Sf6!
- 1...Sxg1
- 1.Qh3?
- threat
- 2.Qxg4#
- 1...Sxg1
- 2.Qh5#
- 1...Sxe5
- 2.Qh5#
- 1...Sh2
- 2.Qh5#
- 1...e3!
- threat
- 1.Qf2?
- 1...Sxg1
- 2.Qxf4#
- 1...Sfxe5
- 2.Qxf4#
- 1...Sxf2
- 2.Bg6#
- 1...Sgxe5
- 2.Sg7#
- 1...Sxh6
- 2.Bg6#
- 1...e3
- 2.Qc2#
- 1...Se1
- 2.Qxf4#
- 1...Sd2
- 2.Qxf4#
- 1...Sfh2
- 2.Qxf4#
- 1...Sd4
- 2.Qxf4#
- 1...Sh4
- 2.Qxf4#
- 1...Sg5
- 2.Sd4#
- 2.Qxf4#
- 1...Sgh2
- 2.Bg6#
- 1...Se3
- 2.Bg6#
- 1...Sf6!
- 1...Sxg1
- 1.Qxf3?
- threat
- 2.Qxg4#
- 2.Qxf4#
- 1...Sxe5
- 2.Sd4#
- 2.Sg7#
- 2.Rg5#
- 2.Qh5#
- 2.Qxf4#
- 1...Sxh6
- 2.Sd4#
- 2.Bg6#
- 2.Rg5#
- 2.Qh5#
- 2.Qxf4#
- 1...Sf6
- 2.Rg5#
- 2.Qxf4#
- 1...Sf2
- 2.Sd4#
- 2.Bg6#
- 2.Rg5#
- 2.Qh5#
- 2.Qxf4#
- 1...Sh2
- 2.Sd4#
- 2.Bg6#
- 2.Rg5#
- 2.Qh5#
- 2.Qxf4#
- 1...Se3
- 2.Sd4#
- 2.Bg6#
- 2.Rg5#
- 2.Qh5#
- 2.Qxf4#
- 1...e3
- 2.Qxf4#
- 1...exf3!
- threat
- 1.h7?
- 1...Sxg1
- 2.Qxf4#
- 1...Sfxe5
- 2.Qxf4#
- 1...Sgxe5
- 2.Sg7#
- 1...e3
- 2.Qd3#
- 1...Se1
- 2.Qxf4#
- 1...Sd2
- 2.Qxf4#
- 1...Sfh2
- 2.Qxf4#
- 1...Sd4
- 2.Qxf4#
- 1...Sh4
- 2.Qxf4#
- 1...Sg5
- 2.Sd4#
- 2.Qxf4#
- 1...Sf2
- 2.Bg6#
- 1...Sgh2
- 2.Bg6#
- 1...Se3
- 2.Bg6#
- 1...Sh6
- 2.Bg6#
- 1...Sf6!
- 1...Sxg1
- 1.Kb2?
- Keys
- 1.Ra5!
- 1...Sxg1
- 2.Qxf4#
- 1...Sfxe5
- 2.Qxf4#
- 1...Sgxe5
- 2.Qh3#
- 1...Sxh6
- 2.Sg7#
- 1...e3
- 2.Qd3#
- 1...Se1
- 2.Qxf4#
- 1...Sd2
- 2.Qxf4#
- 1...Sfh2
- 2.Qxf4#
- 1...Sd4
- 2.Qxf4#
- 1...Sh4
- 2.Qxf4#
- 1...Sg5
- 2.Sd4#
- 2.Sg7#
- 2.Qxf4#
- 1...Sf2
- 2.Sg7#
- 1...Sgh2
- 2.Sg7#
- 1...Se3
- 2.Sg7#
- 1...Sf6
- 2.Sg7#
- 1...Sxg1
- 1.Ra5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 5
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- S(a);OGATE,P_SPINP(c)::QAR1(B),XP(c)
- S(a);OGATE,P_SPINP(c),XR(C)::QAR1(B),XP(c)
- S(a);OGATE,P_SPINP(c),XP(D)::QAR1(B),XP(c)
- S(d);::B(H)
- S(d);SBLOCK,XP(D)::S(F)
- S(d);XP(G)::B(H)
- P(b);OGATEB::QAB(B)
- Tries
- Try
- K(A);S_FLIGHT
- Vars
- S(a);OGATE,P_SPINP(c),XR(C)::QAR1(B),XP(c)
- S(a);OGATE,P_SPINP(c),XP(D)::QAR1(B),XP(c)
- S(d);SBLOCK,XP(D)::S(F)
- S(d);XP(G)::B(H)
- S(a);OGATE,P_SPINP(c)::QAR1(B),XP(c)
- S(d);::B(H)
- Refutation
- S(d);
- Try
- B(H);
- Vars
- S(a);OGATE,P_SPINP(c),XR(C)::QAR1(B),XP(c)
- S(a);OGATE,P_SPINP(c),XP(D)::QAR1(B),XP(c)
- S(d);SBLOCK,XP(D)::S(F)
- S(d);XP(G)::B(H)
- P(b);OGATEB::QAB(B)
- S(a);OGATE,P_SPINP(c)::QAR1(B),XP(c)
- S(d);::B(H)
- Refutation
- S(d);
- Try
- B(H);
- Vars
- S(a);OGATE,P_SPINP(c),XR(C)::QAR1(B),XP(c)
- S(a);OGATE,P_SPINP(c),XP(D)::QAR1(B),XP(c)
- S(d);SBLOCK,XP(D)::S(F)
- S(d);XP(G)::B(H)
- P(b);OGATEB::QAB(B)
- S(a);OGATE,P_SPINP(c)::QAR1(B),XP(c)
- S(d);::B(H)
- Refutation
- S(d);
- Try
- B(I);
- Threat
- S(F)
- Vars
- P(b);OGATEB::QAB(B)
- Refutation
- S(d);XB(I)
- Try
- R(C);
- Vars
- S(a);OGATE,P_SPINP(c),XP(D)::QAR1(B),XP(c)
- S(d);SBLOCK,XP(D)::S(F)
- S(d);XP(G)::B(H)
- P(b);OGATEB::QAB(B)
- S(a);OGATE,P_SPINP(c)::QAR1(B),XP(c)
- S(d);::B(H)
- Refutation
- S(d);
- Try
- R(E);
- Vars
- S(a);OGATE,P_SPINP(c),XR(C)::QAR1(B),XP(c)
- S(a);OGATE,P_SPINP(c),XP(D)::QAR1(B),XP(c)
- S(d);SBLOCK,XP(D)::S(F)
- S(d);XP(G)::B(H)
- P(b);OGATEB::QAB(B)
- S(a);OGATE,P_SPINP(c)::QAR1(B),XP(c)
- S(d);::B(H)
- Refutation
- S(d);
- Try
- R(E);
- Vars
- S(a);OGATE,P_SPINP(c),XR(C)::QAR1(B),XP(c)
- S(a);OGATE,P_SPINP(c),XP(D)::QAR1(B),XP(c)
- S(d);SBLOCK,XP(D)::S(F)
- S(d);XP(G)::B(H)
- P(b);OGATEB::QAB(B)
- S(a);OGATE,P_SPINP(c)::QAR1(B),XP(c)
- S(d);::B(H)
- Refutation
- S(d);
- Try
- R(E);
- Vars
- S(a);OGATE,P_SPINP(c),XR(C)::QAR1(B),XP(c)
- S(a);OGATE,P_SPINP(c),XP(D)::QAR1(B),XP(c)
- S(d);SBLOCK,XP(D)::S(F)
- S(d);XP(G)::B(H)
- P(b);OGATEB::QAB(B)
- S(a);OGATE,P_SPINP(c)::QAR1(B),XP(c)
- S(d);::B(H)
- Refutation
- S(d);
- Try
- Q(B);P_PINS(d)
- Threat
- QAB1(B),XS(d)
- Vars
- S(a);N_GUARD,XR(C)::QAR2(B)
- S(a);N_GUARD,XP(D)::QAR2(B)
- S(a);N_GUARD::QAR2(B)
- Refutation
- P(b);
- Try
- Q(B);
- Vars
- S(a);OGATE,P_SPINP(c),XR(C)::QAR1(B),XP(c)
- S(a);OGATE,P_SPINP(c),XP(D)::QAR1(B),XP(c)
- S(d);XQ(B)::B(H)
- S(d);SBLOCK,XP(D)::S(F)
- S(d);XP(G)::B(H)
- P(b);OGATEB::QAB(B)
- S(a);OGATE,P_SPINP(c)::QAR1(B),XP(c)
- S(d);::B(H)
- Refutation
- S(d);
- Try
- Q(B);P_PINP(c),XS(a)
- Threat
- DUALS(2)
- Vars
- P(b);::QAR1(B),XP(c)
- Refutation
- P(b);N_SPINP(c),XQ(B)
- Try
- P(G);
- Vars
- S(a);OGATE,P_SPINP(c),XR(C)::QAR1(B),XP(c)
- S(a);OGATE,P_SPINP(c),XP(D)::QAR1(B),XP(c)
- S(d);SBLOCK,XP(D)::S(F)
- P(b);OGATEB::QAB(B)
- S(a);OGATE,P_SPINP(c)::QAR1(B),XP(c)
- S(d);::B(H)
- Refutation
- S(d);
- Try
- Actual
- R(E);
- Vars
- S(a);OGATE,P_SPINP(c),XR(C)::QAR1(B),XP(c)
- S(a);OGATE,P_SPINP(c),P_SPINS(a),XP(D)::QAR1(B),XP(c)
- S(d);OGATEB,P_SPINS(d),XP(D)::QAB(B)
- S(d);XP(G)::S(F)
- P(b);OGATEB::QAB(B)
- S(a);OGATE,P_SPINP(c)::QAR1(B),XP(c)
- S(d);::S(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).