MESON Chess Problem Database
Problem Display
PID: 259518 (8/8/1PpP4/B1R5/1rNP3K/NpknP2p/1r1pP2Q/3B4 w - - 0 1)
Yakimovich, Daniil
Variantim, 2022
#2
12 + 8
SOLUTION
- SOUND
- Sets
- 1...Rb1
- 2.Sxb1#
- 1...Ra2
- 2.Sb1#
- 1...Rc2
- 2.Sb1#
- 1...Sc1
- 2.Se5#
- 1...Se1
- 2.Se5#
- 1...Sf2
- 2.Se5#
- 1...Sf4
- 2.Se5#
- 1...Se5
- 2.Sxe5#
- 1...Rb1
- Tries
- 1.Kg3?
- 1...Rb1
- 2.Sxb1#
- 1...Ra2
- 2.Sb1#
- 1...Rc2
- 2.Sb1#
- 1...Sc1
- 2.Se5#
- 1...Se1
- 2.Se5#
- 1...Sf2
- 2.Se5#
- 1...Sf4
- 2.Se5#
- 1...Se5
- 2.Sxe5#
- 1...Sxc5!
- 1...Rb1
- 1.Kg5?
- 1...Rb1
- 2.Sxb1#
- 1...Ra2
- 2.Sb1#
- 1...Rc2
- 2.Sb1#
- 1...Sc1
- 2.Se5#
- 1...Se1
- 2.Se5#
- 1...Sf2
- 2.Se5#
- 1...Sf4
- 2.Se5#
- 1...Se5
- 2.Sxe5#
- 1...Sxc5!
- 1...Rb1
- 1.Bxb4+?
- 1...Sxb4
- 2.Sa5#
- 2.Se5#
- 1...Kxb4!
- 1...Sxb4
- 1.Qe5?
- 1...Sxc5
- 2.dxc5#
- 2.d5#
- 1...Sxe5
- 2.Sxe5#
- 1...Rb1
- 2.Sxb1#
- 1...Ra2
- 2.Sb1#
- 1...Rc2
- 2.Sb1#
- 1...Sc1
- 2.d5#
- 1...Se1
- 2.d5#
- 1...Sf2
- 2.d5#
- 1...Sf4
- 2.d5#
- 1...h2!
- 1...Sxc5
- 1.Qxh3?
- 1...Rb1
- 2.Sxb1#
- 1...Ra2
- 2.Sb1#
- 1...Rc2
- 2.Sb1#
- 1...Sc1
- 2.Se5#
- 1...Se1
- 2.Se5#
- 1...Sf2
- 2.Se5#
- 1...Sf4
- 2.Se5#
- 1...Se5
- 2.Sxe5#
- 1...Sxc5!
- 1...Rb1
- 1.b7?
- 1...Rb1
- 2.Sxb1#
- 1...Ra2
- 2.Sb1#
- 1...Rc2
- 2.Sb1#
- 1...Sc1
- 2.Se5#
- 2.Sb6#
- 1...Se1
- 2.Se5#
- 2.Sb6#
- 1...Sf2
- 2.Se5#
- 2.Sb6#
- 1...Sf4
- 2.Se5#
- 2.Sb6#
- 1...Se5
- 2.Sxe5#
- 1...Sxc5!
- 1...Rb1
- 1.d7?
- 1...Rb1
- 2.Sxb1#
- 1...Ra2
- 2.Sb1#
- 1...Rc2
- 2.Sb1#
- 1...Sc1
- 2.Se5#
- 2.Sd6#
- 1...Se1
- 2.Se5#
- 2.Sd6#
- 1...Sf2
- 2.Se5#
- 2.Sd6#
- 1...Sf4
- 2.Se5#
- 2.Sd6#
- 1...Se5
- 2.Sxe5#
- 1...Sxc5!
- 1...Rb1
- 1.Kg3?
- Keys
- 1.d5!
- 1...Sxc5
- 2.Qe5#
- 1...cxd5
- 2.Sb5#
- 1...Rb1
- 2.Sxb1#
- 1...Ra2
- 2.Sb1#
- 1...Rc2
- 2.Sb1#
- 1...Sc1
- 2.Qe5#
- 1...Se1
- 2.Qe5#
- 1...Sf2
- 2.Qe5#
- 1...Sf4
- 2.Se5#
- 1...Se5
- 2.Qxe5#
- 1...Sxc5
- 1.d5!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 4
- ADDED MATES = 2
- REMOVED MATES = 0
- Sets
- R(a);N_GUARD::S(D),XR(a)
- R(a);N_GUARD::S(D)
- S(e);N_GUARD::R(J)+S(F)
- S(e);N_GUARD::R(J)+S(F),XS(e)
- Tries
- Try
- K(H);S_FLIGHT
- Vars
- R(a);N_GUARD::S(D),XR(a)
- R(a);N_GUARD::S(D)
- S(e);N_GUARD::R(J)+S(F)
- S(e);N_GUARD::R(J)+S(F),XS(e)
- Refutation
- S(e);XR(J)
- Try
- K(H);S_FLIGHT
- Vars
- R(a);N_GUARD::S(D),XR(a)
- R(a);N_GUARD::S(D)
- S(e);N_GUARD::R(J)+S(F)
- S(e);N_GUARD::R(J)+S(F),XS(e)
- Refutation
- S(e);XR(J)
- Try
- B(I);CHECK,XR(g)
- Refutation
- K(d);S_FLIGHT,XB(I)
- Try
- Q(C);
- Vars
- S(e);XQ(C)::R(J)+S(F),XS(e)
- R(a);N_GUARD::S(D),XR(a)
- R(a);N_GUARD::S(D)
- S(e);N_GUARD::QAB(C)+P(G)
- Refutation
- P(f);
- Try
- Q(C);XP(f)
- Vars
- R(a);N_GUARD::S(D),XR(a)
- R(a);N_GUARD::S(D)
- S(e);N_GUARD::R(J)+S(F)
- S(e);N_GUARD::R(J)+S(F),XS(e)
- Refutation
- S(e);XR(J)
- Try
- P(K);
- Vars
- R(a);N_GUARD::S(D),XR(a)
- R(a);N_GUARD::S(D)
- S(e);N_GUARD::R(J)+S(F),XS(e)
- Refutation
- S(e);XR(J)
- Try
- P(L);
- Vars
- R(a);N_GUARD::S(D),XR(a)
- R(a);N_GUARD::S(D)
- S(e);N_GUARD::R(J)+S(F),XS(e)
- Refutation
- S(e);XR(J)
- Try
- Actual
- P(G);P_SPINS(F)
- Vars
- S(e);N_GUARD,XR(J)::QAB(C)
- P(h);N_GUARD,XP(G)::S(D)
- R(a);N_GUARD::S(D),XR(a)
- R(a);N_GUARD::S(D)
- S(e);N_GUARD::QAB(C)
- S(e);N_PINS(F)::R(J)+S(F)
- S(e);N_GUARD::QAB(C),XS(e)
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).