MESON Chess Problem Database
Problem Display
PID: 60047 (2r5/3NNB2/rBQP2p1/1pP2bK1/1P1k2p1/3Pn1P1/2PP4/8 w - - 0 1)
Shifrin, Semion
Die Schwalbe, 2005
#2
13 + 8
SOLUTION
- SOUND
- Sets
- 1...Rxc6
- 2.Sxc6#
- 1...Bxd3
- 2.c3#
- 1...Be4
- 2.Qxe4#
- 1...Be6
- 2.Qe4#
- 1...Bxd7
- 2.Qe4#
- 1...Sd1
- 2.Qd5#
- 1...Sf1
- 2.Qd5#
- 1...Sxc2
- 2.Qd5#
- 1...Sg2
- 2.Qd5#
- 1...Sc4
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Rxc6
- Tries
- 1.Sxf5+?
- 1...Sxf5
- 2.Qe4#
- 2.Qd5#
- 1...gxf5!
- 1...Sxf5
- 1.Qh1?
- 1...Rxb6
- 2.Qa1#
- 1...Rxc5
- 2.Sc6#
- 2.Bxc5#
- 2.Qh8#
- 1...Bxd3
- 2.c3#
- 1...Bxd7
- 2.Qe4#
- 1...Sxc2
- 2.Qd5#
- 1...Ra1
- 2.Qxa1#
- 2.c6#
- 1...Ra2
- 2.c6#
- 1...Ra3
- 2.c6#
- 1...Ra4
- 2.c6#
- 1...Ra5
- 2.c6#
- 1...Ra7
- 2.c6#
- 1...Raa8
- 2.c6#
- 1...Rc6
- 2.Sxc6#
- 2.Qh8#
- 1...Rc7
- 2.Qh8#
- 1...Rca8
- 2.Sc6#
- 1...Rb8
- 2.Sc6#
- 1...Rd8
- 2.Sc6#
- 1...Re8
- 2.Sc6#
- 1...Rf8
- 2.Sc6#
- 1...Rg8
- 2.Sc6#
- 1...Rh8
- 2.Sc6#
- 2.Qxh8#
- 1...Be4
- 2.Qxe4#
- 1...Be6
- 2.Qe4#
- 1...Sd1
- 2.Qd5#
- 1...Sf1
- 2.Qd5#
- 1...Sc4
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Sg2!
- 1...Rxb6
- 1.Qf3?
- threat
- 2.Qxe3#
- 1...Sxc2
- 2.Qd5#
- 1...Sd1
- 2.Qd5#
- 1...Sf1
- 2.Qd5#
- 2.c3#
- 1...Sg2
- 2.Qd5#
- 2.c3#
- 1...Sc4
- 2.Qd5#
- 2.c3#
- 1...Sd5
- 2.Qxd5#
- 1...gxf3!
- threat
- 1.Qxb5?
- threat
- 2.c3#
- 1...Bxd3
- 2.Qxd3#
- 1...Sxc2
- 2.Qc4#
- 1...Ra3
- 2.c6#
- 1...Sd1
- 2.Qc4#
- 1...Sc4
- 2.Qxc4#
- 1...Sd5
- 2.Qc4#
- 1...Bxd7!
- threat
- 1.Sxf5+?
- Keys
- 1.Qa8!
- 1...Rxb6
- 2.Qa1#
- 1...Raxa8
- 2.c6#
- 1...Rxc5
- 2.Sc6#
- 2.Bxc5#
- 2.Qh8#
- 1...Rcxa8
- 2.Sc6#
- 1...Bxd3
- 2.c3#
- 1...Bxd7
- 2.Qe4#
- 1...Sxc2
- 2.Qd5#
- 1...Ra1
- 2.Qxa1#
- 2.c6#
- 1...Ra2
- 2.c6#
- 1...Ra3
- 2.c6#
- 1...Ra4
- 2.c6#
- 1...Ra5
- 2.c6#
- 1...Ra7
- 2.c6#
- 1...Rc6
- 2.Sxc6#
- 2.Qh8#
- 1...Rc7
- 2.Qh8#
- 1...Rb8
- 2.Sc6#
- 1...Rd8
- 2.Sc6#
- 1...Re8
- 2.Sc6#
- 1...Rf8
- 2.Sc6#
- 1...Rg8
- 2.Sc6#
- 1...Rh8
- 2.Sc6#
- 2.Qxh8#
- 1...Be4
- 2.Qxe4#
- 1...Be6
- 2.Qe4#
- 1...Sd1
- 2.Qd5#
- 1...Sf1
- 2.Qd5#
- 1...Sg2
- 2.Qd5#
- 1...Sc4
- 2.Qd5#
- 1...Sd5
- 2.Qxd5#
- 1...Rxb6
- 1.Qa8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 0
- ADDED MATES = 14
- REMOVED MATES = 1
- Sets
- R(h);XQ(I)::S(L),XR(h)
- B(e);SBLOCK,XP(C)::P(A)
- B(e);N_GUARD::QAR1(I),XB(e)
- B(e);N_GUARD::QAR1(I)
- B(e);N_GUARD,XS(K)::QAR1(I)
- S(a);N_GUARD::QAR1(I)
- S(a);N_GUARD,XP(A)::QAR1(I)
- S(a);N_GUARD::QAR1(I),XS(a)
- Tries
- Try
- S(L);CHECK,XB(e)
- Refutation
- P(g);XS(L)
- Try
- Q(I);
- Vars
- R(f);N_GUARD,XB(H)::QAB(I)
- B(e);SBLOCK,XP(C)::P(A)
- B(e);N_GUARD,XS(K)::QAR1(I)
- S(a);N_GUARD,XP(A)::QAR1(I)
- R(f);N_GUARD::B(H)+P(F)
- R(h);N_GUARD::QAB(I)
- R(h);N_GUARD::S(L)
- B(e);N_GUARD::QAR1(I),XB(e)
- B(e);N_GUARD::QAR1(I)
- S(a);N_GUARD::QAR1(I)
- S(a);N_GUARD::QAR1(I),XS(a)
- Refutation
- S(a);
- Try
- Q(I);
- Threat
- QAB1(I),XS(a)
- Vars
- S(a);N_GUARD,XP(A)::QAR1(I)
- S(a);N_GUARD::QAR1(I)
- S(a);N_GUARD::QAR1(I),XS(a)
- Refutation
- P(c);XQ(I)
- Try
- Q(I);XP(d)
- Threat
- P(A)
- Vars
- B(e);OGATE,XP(C)::QAR1(I),XB(e)
- S(a);N_GUARD,XP(A)::QAR1(I)
- R(f);N_GUARD::B(H)+P(F)
- S(a);N_GUARD::QAR1(I)
- S(a);N_GUARD::QAR1(I),XS(a)
- Refutation
- B(e);XS(K)
- Try
- Actual
- Q(I);
- Vars
- R(f);OGATE,XB(H)::QAB(I)
- R(f);N_GUARD,XQ(I)::B(H)+P(F)
- R(h);N_GUARD,XQ(I)::S(L)
- B(e);SBLOCK,XP(C)::P(A)
- B(e);N_GUARD,XS(K)::QAR1(I)
- S(a);N_GUARD,XP(A)::QAR1(I)
- R(f);N_GUARD::B(H)+P(F)
- R(h);OGATE::QAB(I)
- R(h);N_GUARD::S(L)
- B(e);N_GUARD::QAR1(I),XB(e)
- B(e);N_GUARD::QAR1(I)
- S(a);N_GUARD::QAR1(I)
- S(a);N_GUARD::QAR1(I),XS(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).