MESON Chess Problem Database
Problem Display
PID: 163041 (4n2K/5b1P/1p6/1R6/p1kNN2p/P2pP1pB/1PpPRpP1/5Q2 w - - 0 1)
Fomichev, Evgeny Vasilevich
StrateGems, 2013
#2
13 + 10
SOLUTION
- SOUND
- Sets
- 1...Bd5
- 2.Rb4#
- 1...Bh5
- 2.Be6#
- 1...Be6
- 2.Bxe6#
- 1...Bg6
- 2.Be6#
- 1...Bg8
- 2.hxg8Q#
- 2.hxg8B#
- 1...Sd6
- 2.Sxd6#
- 1...Sf6
- 2.Sd6#
- 1...Sc7
- 2.Sd6#
- 1...Sg7
- 2.Sd6#
- 1...c1Q
- 2.Qxc1#
- 1...c1S
- 2.Qxc1#
- 1...c1B
- 2.Qxc1#
- 1...c1R
- 2.Qxc1#
- 1...dxe2
- 2.Qxe2#
- 1...Bd5
- Tries
- 1.Bg4?
- 1...dxe2
- 2.Bxe2#
- 2.Qxe2#
- 1...c1Q
- 2.Qxc1#
- 1...c1S
- 2.Qxc1#
- 1...c1B
- 2.Qxc1#
- 1...c1R
- 2.Qxc1#
- 1...Bd5
- 2.Rb4#
- 1...Bh5
- 2.Be6#
- 1...Be6
- 2.Bxe6#
- 1...Bg6
- 2.Be6#
- 1...Bg8
- 2.hxg8Q#
- 2.hxg8B#
- 1...Sd6
- 2.Sxd6#
- 1...Sf6
- 2.Sd6#
- 1...Sc7
- 2.Sd6#
- 1...Sg7
- 2.Sd6#
- 1...h3!
- 1...dxe2
- 1.Bf5?
- 1...dxe2
- 2.Qxe2#
- 1...c1Q
- 2.Qxc1#
- 1...c1S
- 2.Qxc1#
- 1...c1B
- 2.Qxc1#
- 1...c1R
- 2.Qxc1#
- 1...Bd5
- 2.Rb4#
- 1...Bh5
- 2.Be6#
- 1...Be6
- 2.Bxe6#
- 1...Bg6
- 2.Be6#
- 1...Bg8
- 2.hxg8Q#
- 2.hxg8B#
- 1...Sd6
- 2.Sxd6#
- 1...Sf6
- 2.Sd6#
- 1...Sc7
- 2.Sd6#
- 1...Sg7
- 2.Sd6#
- 1...h3!
- 1...dxe2
- 1.Bd7?
- 1...dxe2
- 2.Qxe2#
- 1...c1Q
- 2.Qxc1#
- 1...c1S
- 2.Qxc1#
- 1...c1B
- 2.Qxc1#
- 1...c1R
- 2.Qxc1#
- 1...Bd5
- 2.Rb4#
- 1...Bh5
- 2.Be6#
- 1...Be6
- 2.Bxe6#
- 1...Bg6
- 2.Be6#
- 1...Bg8
- 2.hxg8Q#
- 2.hxg8B#
- 1...Sd6
- 2.Sxd6#
- 1...Sf6
- 2.Sd6#
- 1...Sc7
- 2.Sd6#
- 1...Sg7
- 2.Sd6#
- 1...h3!
- 1...dxe2
- 1.Bc8?
- 1...dxe2
- 2.Qxe2#
- 1...c1Q
- 2.Qxc1#
- 1...c1S
- 2.Qxc1#
- 1...c1B
- 2.Qxc1#
- 1...c1R
- 2.Qxc1#
- 1...Bd5
- 2.Rb4#
- 1...Bh5
- 2.Be6#
- 1...Be6
- 2.Bxe6#
- 1...Bg6
- 2.Be6#
- 1...Bg8
- 2.hxg8Q#
- 2.hxg8B#
- 1...Sd6
- 2.Sxd6#
- 1...Sf6
- 2.Sd6#
- 1...Sc7
- 2.Sd6#
- 1...Sg7
- 2.Sd6#
- 1...h3!
- 1...dxe2
- 1.Rxf2?
- 1...c1Q
- 2.Qxc1#
- 1...c1S
- 2.Qxc1#
- 1...c1B
- 2.Qxc1#
- 1...c1R
- 2.Qxc1#
- 1...Bd5
- 2.Rb4#
- 1...Bh5
- 2.Be6#
- 1...Be6
- 2.Bxe6#
- 1...Bg6
- 2.Be6#
- 1...Bg8
- 2.hxg8Q#
- 2.hxg8B#
- 1...Sd6
- 2.Sxd6#
- 1...Sf6
- 2.Sd6#
- 1...Sc7
- 2.Sd6#
- 1...Sg7
- 2.Sd6#
- 1...gxf2!
- 1...c1Q
- 1.Re5?
- 1...dxe2
- 2.Qxe2#
- 1...c1Q
- 2.Qxc1#
- 1...c1S
- 2.Qxc1#
- 1...c1B
- 2.Qxc1#
- 1...c1R
- 2.Qxc1#
- 1...Bh5
- 2.Be6#
- 1...Be6
- 2.Bxe6#
- 1...Bg6
- 2.Be6#
- 1...Bg8
- 2.hxg8Q#
- 2.hxg8B#
- 1...Sd6
- 2.Sxd6#
- 1...Sf6
- 2.Sd6#
- 1...Sc7
- 2.Sd6#
- 1...Sg7
- 2.Sd6#
- 1...b5
- 2.Rc5#
- 1...Bd5!
- 1...dxe2
- 1.Rg5?
- 1...dxe2
- 2.Qxe2#
- 1...c1Q
- 2.Qxc1#
- 1...c1S
- 2.Qxc1#
- 1...c1B
- 2.Qxc1#
- 1...c1R
- 2.Qxc1#
- 1...Bh5
- 2.Be6#
- 1...Be6
- 2.Bxe6#
- 1...Bg6
- 2.Be6#
- 1...Bg8
- 2.hxg8Q#
- 2.hxg8B#
- 1...Sd6
- 2.Sxd6#
- 1...Sf6
- 2.Sd6#
- 1...Sc7
- 2.Sd6#
- 1...Sg7
- 2.Sd6#
- 1...b5
- 2.Rc5#
- 1...Bd5!
- 1...dxe2
- 1.Rh5?
- 1...Bxh5
- 2.Be6#
- 1...dxe2
- 2.Qxe2#
- 1...c1Q
- 2.Qxc1#
- 1...c1S
- 2.Qxc1#
- 1...c1B
- 2.Qxc1#
- 1...c1R
- 2.Qxc1#
- 1...Be6
- 2.Bxe6#
- 1...Bg6
- 2.Be6#
- 1...Bg8
- 2.hxg8Q#
- 2.hxg8B#
- 1...Sd6
- 2.Sxd6#
- 1...Sf6
- 2.Sd6#
- 1...Sc7
- 2.Sd6#
- 1...Sg7
- 2.Sd6#
- 1...b5
- 2.Rc5#
- 1...Bd5!
- 1...Bxh5
- 1.Qa1?
- threat
- 2.Qa2#
- 1...c1S
- 2.Qxc1#
- 1...dxe2!
- threat
- 1.Qxf2?
- threat
- 2.Qxf7#
- 1...dxe2
- 2.Qxe2#
- 1...Bd5
- 2.Rb4#
- 1...Bh5
- 2.Be6#
- 1...Be6
- 2.Bxe6#
- 1...Bg6
- 2.Be6#
- 1...Bg8
- 2.hxg8Q#
- 2.hxg8B#
- 1...Sd6
- 2.Sxd6#
- 1...Sf6
- 2.Sd6#
- 1...Sc7
- 2.Sd6#
- 1...Sg7
- 2.Sd6#
- 1...gxf2!
- threat
- 1.Bg4?
- Keys
- 1.Re1!
- 1...fxe1Q
- 2.Qxf7#
- 1...fxe1S
- 2.Qxf7#
- 1...fxe1B
- 2.Qxf7#
- 1...fxe1R
- 2.Qxf7#
- 1...c1Q
- 2.Rxc1#
- 1...c1S
- 2.Rxc1#
- 1...c1B
- 2.Rxc1#
- 1...c1R
- 2.Rxc1#
- 1...Bd5
- 2.Rb4#
- 1...Bh5
- 2.Be6#
- 1...Be6
- 2.Bxe6#
- 1...Bg6
- 2.Be6#
- 1...Bg8
- 2.hxg8Q#
- 2.hxg8B#
- 1...Sd6
- 2.Sxd6#
- 1...Sf6
- 2.Sd6#
- 1...Sc7
- 2.Sd6#
- 1...Sg7
- 2.Sd6#
- 1...fxe1Q
- 1.Re1!
FEATURES
- Static
- TYPE = MUTATE
- CHANGED MATES = 4
- ADDED MATES = 4
- REMOVED MATES = 1
- Sets
- B(i);SBLOCK::R1(K)
- B(i);N_GUARD::B(H)
- B(i);N_GUARD::B(H),XB(i)
- B(i);OGATE::PXB(i)=Q
- S(j);N_GUARD::S(J),XS(j)
- S(j);N_GUARD::S(J)
- P(a);OGATEB::QAR(A),XQ(a)
- P(a);OGATEB::QAR(A),XS(a)
- P(a);OGATEB::QAR(A),XB(a)
- P(a);OGATEB::QAR(A),XR(a)
- P(c);OGATE,P_SPINP(c),XR(D)::QAB(A),XP(c)
- Tries
- Try
- B(H);
- Vars
- P(a);OGATEB::QAR(A),XQ(a)
- P(a);OGATEB::QAR(A),XS(a)
- P(a);OGATEB::QAR(A),XB(a)
- P(a);OGATEB::QAR(A),XR(a)
- B(i);SBLOCK::R1(K)
- B(i);N_GUARD::B(H)
- B(i);N_GUARD::B(H),XB(i)
- B(i);OGATE::PXB(i)=Q
- S(j);N_GUARD::S(J),XS(j)
- S(j);N_GUARD::S(J)
- Refutation
- P(g);
- Try
- B(H);
- Vars
- P(c);OGATE,P_SPINP(c),XR(D)::QAB(A),XP(c)
- P(a);OGATEB::QAR(A),XQ(a)
- P(a);OGATEB::QAR(A),XS(a)
- P(a);OGATEB::QAR(A),XB(a)
- P(a);OGATEB::QAR(A),XR(a)
- B(i);SBLOCK::R1(K)
- B(i);N_GUARD::B(H)
- B(i);N_GUARD::B(H),XB(i)
- B(i);OGATE::PXB(i)=Q
- S(j);N_GUARD::S(J),XS(j)
- S(j);N_GUARD::S(J)
- Refutation
- P(g);
- Try
- B(H);
- Vars
- P(c);OGATE,P_SPINP(c),XR(D)::QAB(A),XP(c)
- P(a);OGATEB::QAR(A),XQ(a)
- P(a);OGATEB::QAR(A),XS(a)
- P(a);OGATEB::QAR(A),XB(a)
- P(a);OGATEB::QAR(A),XR(a)
- B(i);SBLOCK::R1(K)
- B(i);N_GUARD::B(H)
- B(i);N_GUARD::B(H),XB(i)
- B(i);OGATE::PXB(i)=Q
- S(j);N_GUARD::S(J),XS(j)
- S(j);N_GUARD::S(J)
- Refutation
- P(g);
- Try
- B(H);
- Vars
- P(c);OGATE,P_SPINP(c),XR(D)::QAB(A),XP(c)
- P(a);OGATEB::QAR(A),XQ(a)
- P(a);OGATEB::QAR(A),XS(a)
- P(a);OGATEB::QAR(A),XB(a)
- P(a);OGATEB::QAR(A),XR(a)
- B(i);SBLOCK::R1(K)
- B(i);N_GUARD::B(H)
- B(i);N_GUARD::B(H),XB(i)
- B(i);OGATE::PXB(i)=Q
- S(j);N_GUARD::S(J),XS(j)
- S(j);N_GUARD::S(J)
- Refutation
- P(g);
- Try
- R(D);P_PINP(c),XP(b)
- Vars
- P(a);OGATEB::QAR(A),XQ(a)
- P(a);OGATEB::QAR(A),XS(a)
- P(a);OGATEB::QAR(A),XB(a)
- P(a);OGATEB::QAR(A),XR(a)
- B(i);SBLOCK::R1(K)
- B(i);N_GUARD::B(H)
- B(i);N_GUARD::B(H),XB(i)
- B(i);OGATE::PXB(i)=Q
- S(j);N_GUARD::S(J),XS(j)
- S(j);N_GUARD::S(J)
- Refutation
- P(d);XR(D)
- Try
- R(K);
- Vars
- P(c);OGATE,P_SPINP(c),XR(D)::QAB(A),XP(c)
- P(a);OGATEB::QAR(A),XQ(a)
- P(a);OGATEB::QAR(A),XS(a)
- P(a);OGATEB::QAR(A),XB(a)
- P(a);OGATEB::QAR(A),XR(a)
- B(i);N_GUARD::B(H)
- B(i);N_GUARD::B(H),XB(i)
- B(i);OGATE::PXB(i)=Q
- S(j);N_GUARD::S(J),XS(j)
- S(j);N_GUARD::S(J)
- P(h);N_GUARD::R1(K)
- Refutation
- B(i);
- Try
- R(K);
- Vars
- P(c);OGATE,P_SPINP(c),XR(D)::QAB(A),XP(c)
- P(a);OGATEB::QAR(A),XQ(a)
- P(a);OGATEB::QAR(A),XS(a)
- P(a);OGATEB::QAR(A),XB(a)
- P(a);OGATEB::QAR(A),XR(a)
- B(i);N_GUARD::B(H)
- B(i);N_GUARD::B(H),XB(i)
- B(i);OGATE::PXB(i)=Q
- S(j);N_GUARD::S(J),XS(j)
- S(j);N_GUARD::S(J)
- P(h);N_GUARD::R1(K)
- Refutation
- B(i);
- Try
- R(K);
- Vars
- B(i);N_GUARD,XR(K)::B(H)
- P(c);OGATE,P_SPINP(c),XR(D)::QAB(A),XP(c)
- P(a);OGATEB::QAR(A),XQ(a)
- P(a);OGATEB::QAR(A),XS(a)
- P(a);OGATEB::QAR(A),XB(a)
- P(a);OGATEB::QAR(A),XR(a)
- B(i);N_GUARD::B(H),XB(i)
- B(i);N_GUARD::B(H)
- B(i);OGATE::PXB(i)=Q
- S(j);N_GUARD::S(J),XS(j)
- S(j);N_GUARD::S(J)
- P(h);N_GUARD::R1(K)
- Refutation
- B(i);
- Try
- Q(A);
- Threat
- QAB(A)
- Vars
- P(a);OGATEB::QAR(A),XS(a)
- Refutation
- P(c);XR(D)
- Try
- Q(A);XP(b)
- Threat
- QAB(A),XB(i)
- Vars
- P(c);OGATE,XR(D)::QAB(A),XP(c)
- B(i);SBLOCK::R1(K)
- B(i);N_GUARD::B(H)
- B(i);N_GUARD::B(H),XB(i)
- B(i);OGATE::PXB(i)=Q
- S(j);N_GUARD::S(J),XS(j)
- S(j);N_GUARD::S(J)
- Refutation
- P(d);XQ(A)
- Try
- Actual
- R(D);P_PINP(c)
- Vars
- P(b);OGATE,XR(D)::QAB(A),XB(i)
- P(a);OGATEB::R(D),XQ(a)
- P(a);OGATEB::R(D),XS(a)
- P(a);OGATEB::R(D),XB(a)
- P(a);OGATEB::R(D),XR(a)
- B(i);SBLOCK::R1(K)
- B(i);N_GUARD::B(H)
- B(i);N_GUARD::B(H),XB(i)
- B(i);OGATE::PXB(i)=Q
- S(j);N_GUARD::S(J),XS(j)
- S(j);N_GUARD::S(J)
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).