MESON Chess Problem Database
Problem Display
PID: 47579 (1BR5/4N1Q1/1K3Rn1/1p1NP3/1r1kb3/3P4/2PP4/6b1 w - - 0 1)
Mochalkin, Oleksandr Viktorovich
Postnikov, Oleksandr Borisovich
Shedey, Sergey Oleksandrovich
2nd Prize, Shakhmaty, 1989
#2
11 + 6
SOLUTION
- SOUND
- Sets
- 1...Be3
- 2.dxe3#
- 1...Bxd5
- 2.Sf5#
- 1...Sf4
- 2.Qxg1#
- 1...Sh4
- 2.Qxg1#
- 1...Sxe5
- 2.Qxg1#
- 1...Sf8
- 2.Qxg1#
- 1...Sh8
- 2.Qxg1#
- 1...Be3
- Tries
- 1.Sf4?
- threat
- 2.Se2#
- 2.Se6#
- 2.c3#
- 1...Sxf4
- 2.Qxg1#
- 1...Sxe7
- 2.Qxg1#
- 2.c3#
- 1...Rb3
- 2.Se2#
- 2.Se6#
- 1...Rc4
- 2.Se2#
- 2.Se6#
- 1...Bf3
- 2.Se6#
- 2.Sf5#
- 2.c3#
- 1...Bd5
- 2.Se2#
- 2.Sf5#
- 2.c3#
- 1...Bf5
- 2.Se2#
- 2.Sxf5#
- 2.Sc6#
- 2.Rd6#
- 2.c3#
- 1...Sf8
- 2.Se2#
- 2.Qxg1#
- 2.c3#
- 1...Bxd3!
- threat
- 1.Rf4?
- threat
- 2.Rxe4#
- 1...Sxf4
- 2.Qxg1#
- 2.e6#
- 1...Sxe7!
- threat
- 1.Rd6?
- threat
- 2.Sc6#
- 1...Bxd3
- 2.Sc3#
- 1...Sxe7
- 2.e6#
- 1...Rc4!
- threat
- 1.Rc5?
- threat
- 2.Sc6#
- 1...Bxd5
- 2.Sf5#
- 2.Rxd5#
- 1...Sxe5
- 2.Qxg1#
- 1...Sxe7
- 2.Qxg1#
- 1...Bxd3!
- threat
- 1.Qxg6?
- threat
- 2.Qxe4#
- 2.Qxg1#
- 1...Bxd3
- 2.Qxd3#
- 2.c3#
- 1...Bxd5
- 2.Sf5#
- 2.Qxg1#
- 2.c3#
- 1...Rb1
- 2.Qxe4#
- 1...Bf2
- 2.Qxe4#
- 1...Bh2
- 2.Qxe4#
- 1...Be3
- 2.Qxe4#
- 2.dxe3#
- 1...Bh1
- 2.Qxg1#
- 2.c3#
- 1...Bg2
- 2.c3#
- 1...Bf3
- 2.Qxg1#
- 2.c3#
- 1...Bf5
- 2.Qxg1#
- 1...Bxg6!
- threat
- 1.e6?
- threat
- 2.Rxg6#
- 1...Bxd3
- 2.Rf4#
- 1...Sxe7
- 2.Rf5#
- 1...Sf4
- 2.Rxf4#
- 2.Rf5#
- 2.Rg6#
- 2.Rh6#
- 2.Rf7#
- 2.Rff8#
- 2.Qxg1#
- 1...Sh4
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rf4#
- 2.Rf5#
- 2.Rg6#
- 2.Rh6#
- 2.Rf7#
- 2.Rff8#
- 2.Qxg1#
- 1...Se5
- 2.Qxg1#
- 1...Sf8
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rf4#
- 2.Rf5#
- 2.Rg6#
- 2.Rh6#
- 2.Rf7#
- 2.Rfxf8#
- 2.Qxg1#
- 1...Sh8
- 2.Rf1#
- 2.Rf2#
- 2.Rf3#
- 2.Rf4#
- 2.Rf5#
- 2.Rg6#
- 2.Rh6#
- 2.Rf7#
- 2.Rff8#
- 2.Qxg1#
- 1...Bh2!
- threat
- 1.Sf4?
- Keys
- 1.Sc3!
- threat
- 2.Se2#
- 1...Bxd3
- 2.Rd6#
- 1...Sxe7
- 2.Qxg1#
- 1...Bf3
- 2.Sf5#
- 1...Sf4
- 2.Qxg1#
- threat
- 1.Sc3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 3
- REMOVED MATES = 6
- Sets
- B(a);OGATE::P(B),XB(a)
- B(d);N_GUARD,SBLOCK,XS(D)::S(H)
- S(f);OGATE::QAB(I),XB(a)
- S(f);OGATE,XP(E)::QAB(I),XB(a)
- Tries
- Try
- S(D);
- Threat
- DUALS(3)
- Vars
- S(f);OGATE,XS(D)::QAB(I),XB(a)
- Refutation
- B(d);XP(C)
- Try
- R(G);P_PINB(d)
- Threat
- R1(G),XB(d)
- Refutation
- S(f);XS(H)
- Try
- R(G);
- Threat
- S(H)
- Vars
- B(d);N_GUARD,XP(C)::R(G)+S(D)
- S(f);N_GUARD,XS(H)::QAB(I)+P(E)
- Refutation
- R(b);
- Try
- R(K);
- Threat
- S(H)
- Vars
- S(f);OGATE,XP(E)::QAB(I),XB(a)
- S(f);OGATE,XS(H)::QAB(I),XB(a)
- Refutation
- B(d);XP(C)
- Try
- Q(I);XS(f)
- Threat
- DUALS(2)
- Vars
- R(b);::QAR1(I),XB(d)
- B(a);::QAR1(I),XB(d)
- B(d);::P(A)
- B(d);::QAB(I),XB(a)
- Refutation
- B(d);XQ(I)
- Try
- P(E);
- Threat
- QAB(I)+R(G),XS(f)
- Vars
- B(d);XP(C)::QAB(I)+R(G),DCHECK
- S(f);N_GUARD,XS(H)::QAB(I)+R(G)
- S(f);OGATE::QAB(I),XB(a)
- Refutation
- B(a);
- Try
- Actual
- S(D);
- Threat
- S(D)
- Vars
- B(d);N_GUARD,XP(C)::R(G)
- S(f);OGATE,XS(H)::QAB(I),XB(a)
- B(d);N_GUARD::S(H)
- S(f);OGATE::QAB(I),XB(a)
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).