MESON Chess Problem Database
Problem Display
PID: 221913 (6B1/5n2/5p2/p2Nbp1R/PpQpk1p1/1PP1B3/1K3PP1/8 w - - 0 1)
Lider, Valentin Viktorovich
Thema Danicum, 1977
#2
11 + 9
SOLUTION
- SOUND
- Sets
- 1...Bh2
- 2.Qxd4#
- 1...Bg3
- 2.Qxd4#
- 1...Bf4
- 2.Qxd4#
- 1...Bd6
- 2.Qxd4#
- 1...Bc7
- 2.Qxd4#
- 1...Bb8
- 2.Qxd4#
- 1...bxc3+
- 2.Sxc3#
- 1...g3
- 2.f3#
- 1...Bh2
- Tries
- 1.Kc2?
- 1...bxc3
- 2.Sxc3#
- 1...Bh2
- 2.Qxd4#
- 1...Bg3
- 2.Qxd4#
- 1...Bf4
- 2.Qxd4#
- 1...Bd6
- 2.Qxd4#
- 1...Bc7
- 2.Qxd4#
- 1...Bb8
- 2.Qxd4#
- 1...Sg5
- 2.Qd3#
- 1...Sd6
- 2.Qd3#
- 1...Sh6
- 2.Qd3#
- 1...Sd8
- 2.Qd3#
- 1...Sh8
- 2.Qd3#
- 1...g3
- 2.f3#
- 1...f4!
- 1...bxc3
- 1.Sxb4?
- threat
- 2.Qd3#
- 2.Qd5#
- 2.Qc6#
- 1...Bh2
- 2.Qd5#
- 2.Qxd4#
- 1...Bg3
- 2.Qd5#
- 2.Qxd4#
- 1...Bf4
- 2.Qd5#
- 2.Qxd4#
- 1...Bd6
- 2.Qd5#
- 2.Qxd4#
- 1...Bc7
- 2.Qd5#
- 2.Qxd4#
- 1...Bb8
- 2.Qd5#
- 2.Qxd4#
- 1...Sd8
- 2.Bd5#
- 2.Qd3#
- 2.Qd5#
- 1...axb4!
- threat
- 1.Sf4?
- threat
- 2.Qd3#
- 2.Qd5#
- 2.Qc6#
- 1...Bxf4
- 2.Qxd4#
- 1...Bd6
- 2.Qd5#
- 2.Qxd4#
- 1...Bc7
- 2.Qd5#
- 2.Qxd4#
- 1...Bb8
- 2.Qd5#
- 2.Qxd4#
- 1...Sd8
- 2.Bd5#
- 2.Qd3#
- 2.Qd5#
- 1...bxc3+!
- threat
- 1.Bc1?
- 1...bxc3+
- 2.Sxc3#
- 1...Bh2
- 2.Qxd4#
- 1...Bg3
- 2.Qxd4#
- 1...Bf4
- 2.Qxd4#
- 1...Bd6
- 2.Qxd4#
- 1...Bc7
- 2.Qxd4#
- 1...Bb8
- 2.Qxd4#
- 1...Sg5
- 2.Qe2#
- 1...Sd6
- 2.Qe2#
- 1...Sh6
- 2.Qe2#
- 1...Sd8
- 2.Qe2#
- 1...Sh8
- 2.Qe2#
- 1...g3
- 2.f3#
- 1...f4!
- 1...bxc3+
- 1.Bd2?
- 1...bxc3+
- 2.Sxc3#
- 1...Bh2
- 2.Qxd4#
- 1...Bg3
- 2.Qxd4#
- 1...Bf4
- 2.Qxd4#
- 1...Bd6
- 2.Qxd4#
- 1...Bc7
- 2.Qxd4#
- 1...Bb8
- 2.Qxd4#
- 1...Sg5
- 2.Qe2#
- 1...Sd6
- 2.Qe2#
- 1...Sh6
- 2.Qe2#
- 1...Sd8
- 2.Qe2#
- 1...Sh8
- 2.Qe2#
- 1...g3
- 2.f3#
- 1...f4!
- 1...bxc3+
- 1.Bxd4?
- 1...Bxd4
- 2.Qxd4#
- 1...Sg5
- 2.Qe2#
- 1...Bh2
- 2.Bxf6#
- 1...Bg3
- 2.Bxf6#
- 1...Bf4
- 2.Sxf6#
- 2.Bxf6#
- 1...Bd6
- 2.Bxf6#
- 1...Bc7
- 2.Bxf6#
- 1...Bb8
- 2.Bxf6#
- 1...Sd6
- 2.Qe2#
- 1...Sh6
- 2.Qe2#
- 1...Sd8
- 2.Qe2#
- 1...Sh8
- 2.Qe2#
- 1...g3
- 2.f3#
- 1...f4
- 2.Bxe5#
- 1...bxc3+!
- 1...Bxd4
- 1.Bf4?
- 1...Bxf4
- 2.Qxd4#
- 1...Sg5
- 2.Qe2#
- 1...Bd6
- 2.Qxd4#
- 1...Bc7
- 2.Qxd4#
- 1...Bb8
- 2.Qxd4#
- 1...Sd6
- 2.Qe2#
- 1...Sh6
- 2.Qe2#
- 1...Sd8
- 2.Qe2#
- 1...Sh8
- 2.Qe2#
- 1...g3
- 2.f3#
- 1...bxc3+!
- 1...Bxf4
- 1.Bh6?
- 1...bxc3+
- 2.Sxc3#
- 1...Sxh6
- 2.Qe2#
- 1...Bh2
- 2.Qxd4#
- 1...Bg3
- 2.Qxd4#
- 1...Bf4
- 2.Qxd4#
- 1...Bd6
- 2.Qxd4#
- 1...Bc7
- 2.Qxd4#
- 1...Bb8
- 2.Qxd4#
- 1...Sg5
- 2.Qe2#
- 1...Sd6
- 2.Qe2#
- 1...Sd8
- 2.Qe2#
- 1...Sh8
- 2.Qe2#
- 1...g3
- 2.f3#
- 1...f4!
- 1...bxc3+
- 1.Bxf7?
- 1...bxc3+
- 2.Sxc3#
- 1...Bh2
- 2.Qxd4#
- 1...Bg3
- 2.Qxd4#
- 1...Bf4
- 2.Qxd4#
- 1...Bd6
- 2.Qxd4#
- 1...Bc7
- 2.Qxd4#
- 1...Bb8
- 2.Qxd4#
- 1...g3
- 2.f3#
- 1...f4!
- 1...bxc3+
- 1.cxb4?
- threat
- 2.Sc3#
- 1...Bh2
- 2.Qxd4#
- 1...Bg3
- 2.Qxd4#
- 1...Bf4
- 2.Qxd4#
- 1...Bd6
- 2.Qxd4#
- 1...Bc7
- 2.Qxd4#
- 1...Bb8
- 2.Qxd4#
- 1...axb4!
- threat
- 1.Kc2?
- Keys
- 1.cxd4!
- 1...Bxd4+
- 2.Qxd4#
- 1...Sg5
- 2.Qc2#
- 1...Bh2
- 2.Sxf6#
- 1...Bg3
- 2.Sxf6#
- 1...Bf4
- 2.Sxf6#
- 1...Bd6
- 2.Sxf6#
- 1...Bc7
- 2.Sxf6#
- 1...Bb8
- 2.Sxf6#
- 1...Sd6
- 2.Qc2#
- 1...Sh6
- 2.Qc2#
- 1...Sd8
- 2.Qc2#
- 1...Sh8
- 2.Qc2#
- 1...g3
- 2.f3#
- 1...f4
- 2.dxe5#
- 1...Bxd4+
- 1.cxd4!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 6
- ADDED MATES = 7
- REMOVED MATES = 1
- Sets
- B(f);N_GUARD::QAR1(H),XP(b)
- P(a);CHECK,XP(E)::S(I),XP(a)
- P(d);N_GUARD::P(B)
- Tries
- Try
- K(A);P-FLIGHT
- Vars
- P(a);XP(E)::S(I),XP(a)
- B(f);N_GUARD::QAR1(H),XP(b)
- S(i);::QAB1(H)
- P(d);N_GUARD::P(B)
- Refutation
- P(g);
- Try
- S(I);XP(a)
- Threat
- DUALS(3)
- Refutation
- P(e);XS(I)
- Try
- S(I);
- Threat
- DUALS(3)
- Vars
- B(f);N_GUARD,XS(I)::QAR1(H),XP(b)
- Refutation
- P(a);CHECK,XP(E)
- Try
- B(F);
- Vars
- P(a);CHECK,XP(E)::S(I),XP(a)
- B(f);N_GUARD::QAR1(H),XP(b)
- S(i);::QAR2(H)
- P(d);N_GUARD::P(B)
- Refutation
- P(g);
- Try
- B(F);
- Vars
- P(a);CHECK,XP(E)::S(I),XP(a)
- B(f);N_GUARD::QAR1(H),XP(b)
- S(i);::QAR2(H)
- P(d);N_GUARD::P(B)
- Refutation
- P(g);
- Try
- B(F);XP(b)
- Vars
- B(f);OGATE,P_PINP(E),P_SPINB(f),XB(F)::QAR1(H),XB(f)
- S(i);::QAR2(H)
- B(f);OGATE::QAR(H)+B(F),XP(h)
- P(d);N_GUARD::P(B)
- P(g);::QAR(H)+B(F),XB(f)
- Refutation
- P(a);CHECK,XP(E)
- Try
- B(F);
- Vars
- B(f);N_GUARD,XB(F)::QAR1(H),XP(b)
- S(i);::QAR2(H)
- B(f);N_GUARD::QAR1(H),XP(b)
- P(d);N_GUARD::P(B)
- Refutation
- P(a);CHECK,XP(E)
- Try
- B(F);
- Vars
- P(a);CHECK,XP(E)::S(I),XP(a)
- S(i);XB(F)::QAR2(H)
- B(f);N_GUARD::QAR1(H),XP(b)
- S(i);::QAR2(H)
- P(d);N_GUARD::P(B)
- Refutation
- P(g);
- Try
- B(K);XS(i)
- Vars
- P(a);CHECK,XP(E)::S(I),XP(a)
- B(f);N_GUARD::QAR1(H),XP(b)
- P(d);N_GUARD::P(B)
- Refutation
- P(g);
- Try
- P(E);XP(a)
- Threat
- S(I)
- Vars
- B(f);N_GUARD::QAR1(H),XP(b)
- Refutation
- P(e);XP(E)
- Try
- Actual
- P(E);P_SPINP(E),XP(b)
- Vars
- B(f);CHECK,OGATE,P_SPINB(f),XP(E)::QAR1(H),XB(f)
- S(i);::QAB(H)
- B(f);N_GUARD,N_PINP(E)::S(I),XP(h)
- P(d);N_GUARD::P(B)
- P(g);::QAR(H)+P(E),XB(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).