MESON Chess Problem Database
Problem Display
PID: 111170 (8/2ppR3/2pn4/1PP1N3/1KpkPRQN/4p1B1/1P1n4/8 w - - 0 1)
Shedey, Sergey Oleksandrovich
64 Shakhmatnoe obozrenie, 1977
#2
11 + 8
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Sb1
- 2.Shf3#
- 1...Sf1
- 2.Shf3#
- 1...Sb3
- 2.Shf3#
- 1...Sf3
- 2.Shxf3#
- 1...S2xe4
- 2.Qd1#
- 1...S6xe4
- 2.Qxd7#
- 1...Sxb5
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Sb7
- 2.Sf5#
- 1...Sf7
- 2.Sf5#
- 1...Sc8
- 2.Sf5#
- 1...Se8
- 2.Sf5#
- 1...e2
- 2.Bf2#
- 1...c3
- 2.bxc3#
- 1...Sb1
- Tries
- 1.Be1?
- 1...S2xe4
- 2.Qd1#
- 1...S6xe4
- 2.Qxd7#
- 1...Sxb5
- 2.Sf5#
- 1...e2
- 2.Bf2#
- 2.Qg1#
- 1...Sb1
- 2.Shf3#
- 1...Sf1
- 2.Shf3#
- 2.Bc3#
- 1...Sb3
- 2.Shf3#
- 2.Bc3#
- 1...Sf3
- 2.Shxf3#
- 2.Bc3#
- 1...Sf5
- 2.Sxf5#
- 1...Sb7
- 2.Sf5#
- 1...Sf7
- 2.Sf5#
- 1...Sc8
- 2.Sf5#
- 1...Se8
- 2.Sf5#
- 1...c3
- 2.bxc3#
- 1...cxb5!
- 1...S2xe4
- 1.Bh2?
- 1...S2xe4
- 2.Qd1#
- 1...S6xe4
- 2.Qxd7#
- 1...Sxb5
- 2.Sf5#
- 1...e2
- 2.Bg1#
- 2.Qg1#
- 1...Sb1
- 2.Shf3#
- 1...Sf1
- 2.Shf3#
- 1...Sb3
- 2.Shf3#
- 1...Sf3
- 2.Shxf3#
- 1...Sf5
- 2.Sxf5#
- 1...Sb7
- 2.Sf5#
- 1...Sf7
- 2.Sf5#
- 1...Sc8
- 2.Sf5#
- 1...Se8
- 2.Sf5#
- 1...c3
- 2.bxc3#
- 1...cxb5!
- 1...S2xe4
- 1.Rf1?
- 1...Sxf1
- 2.Shf3#
- 1...S2xe4
- 2.Rd1#
- 1...S6xe4
- 2.Rxd7#
- 1...Sxb5
- 2.Sf5#
- 1...e2
- 2.Bf2#
- 1...Sb1
- 2.Shf3#
- 1...Sb3
- 2.Shf3#
- 1...Sf3
- 2.Shxf3#
- 1...Sf5
- 2.Sxf5#
- 1...Sb7
- 2.Sf5#
- 1...Sf7
- 2.Sf5#
- 1...Sc8
- 2.Sf5#
- 1...Se8
- 2.Sf5#
- 1...c3
- 2.bxc3#
- 1...cxb5!
- 1...Sxf1
- 1.Qd1?
- threat
- 2.Shf3#
- 1...e2
- 2.Bf2#
- 2.Qg1#
- 2.Qxd2#
- 1...Sxe4!
- threat
- 1.Qh5?
- 1...S2xe4
- 2.Qd1#
- 1...S6xe4
- 2.Rxd7#
- 1...Sxb5
- 2.Sf5#
- 1...e2
- 2.Bf2#
- 1...Sb1
- 2.Shf3#
- 1...Sf1
- 2.Shf3#
- 1...Sb3
- 2.Shf3#
- 1...Sf3
- 2.Shxf3#
- 1...Sf5
- 2.Sxf5#
- 1...Sb7
- 2.Sf5#
- 1...Sf7
- 2.Sf5#
- 1...Sc8
- 2.Sf5#
- 1...Se8
- 2.Sf5#
- 1...c3
- 2.bxc3#
- 1...cxb5!
- 1...S2xe4
- 1.Qe6?
- 1...S2xe4
- 2.Shf3#
- 1...S6xe4
- 2.Sf5#
- 2.Rxd7#
- 2.Qxd7#
- 1...Sxb5
- 2.Sf5#
- 1...cxb5
- 2.Qd5#
- 1...e2
- 2.Bf2#
- 1...Sb1
- 2.Shf3#
- 1...Sf1
- 2.Shf3#
- 1...Sb3
- 2.Shf3#
- 1...Sf3
- 2.Shxf3#
- 1...Sf5
- 2.Sxf5#
- 1...Sb7
- 2.Sf5#
- 1...Sf7
- 2.Sf5#
- 1...Sc8
- 2.Sf5#
- 1...Se8
- 2.Sf5#
- 1...c3
- 2.bxc3#
- 1...dxe6!
- 1...S2xe4
- 1.bxc6?
- 1...S2xe4
- 2.Qd1#
- 1...S6xe4
- 2.Qxd7#
- 1...e2
- 2.Bf2#
- 1...Sb1
- 2.Shf3#
- 1...Sf1
- 2.Shf3#
- 1...Sb3
- 2.Shf3#
- 1...Sf3
- 2.Shxf3#
- 1...Sb5
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Sb7
- 2.Sf5#
- 1...Sf7
- 2.Sf5#
- 1...Sc8
- 2.Sf5#
- 1...Se8
- 2.Sf5#
- 1...c3
- 2.bxc3#
- 1...dxc6!
- 1...S2xe4
- 1.b6?
- 1...S2xe4
- 2.Qd1#
- 1...S6xe4
- 2.Qxd7#
- 1...e2
- 2.Bf2#
- 1...Sb1
- 2.Shf3#
- 1...Sf1
- 2.Shf3#
- 1...Sb3
- 2.Shf3#
- 1...Sf3
- 2.Shxf3#
- 1...Sb5
- 2.Sf5#
- 1...Sf5
- 2.Sxf5#
- 1...Sb7
- 2.Sf5#
- 1...Sf7
- 2.Sf5#
- 1...Sc8
- 2.Sf5#
- 1...Se8
- 2.Sf5#
- 1...c3
- 2.bxc3#
- 1...cxb6!
- 1...S2xe4
- 1.cxd6?
- threat
- 2.Sf5#
- 1...Sxe4
- 2.Qd1#
- 1...c5+!
- threat
- 1.Be1?
- Keys
- 1.Qg8!
- 1...S2xe4
- 2.Shf3#
- 1...S6xe4
- 2.Sf5#
- 1...Sxb5
- 2.Sf5#
- 1...cxb5
- 2.Qd5#
- 1...e2
- 2.Bf2#
- 1...Sb1
- 2.Shf3#
- 1...Sf1
- 2.Shf3#
- 1...Sb3
- 2.Shf3#
- 1...Sf3
- 2.Shxf3#
- 1...Sf5
- 2.Sxf5#
- 1...Sb7
- 2.Sf5#
- 1...Sf7
- 2.Sf5#
- 1...Sc8
- 2.Sf5#
- 1...Se8
- 2.Sf5#
- 1...c3
- 2.bxc3#
- 1...S2xe4
- 1.Qg8!
FEATURES
- Static
- TYPE = INCOMPLETE_BLOCK
- CHANGED MATES = 2
- ADDED MATES = 1
- REMOVED MATES = 0
- Sets
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- S(a);OGATEB,P_SPINS(a),XP(D)::QAR(F)
- S(f);OGATEB,P_SPINS(f),XP(D)::QAR(F),XP(h)
- S(f);N_GUARD,XP(H)::S(G)
- S(f);N_GUARD::S(G),XS(f)
- S(f);N_GUARD::S(G)
- P(b);OGATEB::B(B)
- P(c);OGATE::P(A),XP(c)
- Tries
- Try
- B(B);
- Vars
- S(a);OGATEB,P_SPINS(a),XP(D)::QAR(F)
- S(f);OGATEB,P_SPINS(f),XP(D)::QAR(F),XP(h)
- S(f);N_GUARD,XP(H)::S(G)
- S(a);N_GUARD::S(G)
- S(f);N_GUARD::S(G),XS(f)
- S(f);N_GUARD::S(G)
- P(c);OGATE::P(A),XP(c)
- Refutation
- P(e);XP(H)
- Try
- B(B);
- Vars
- S(a);OGATEB,P_SPINS(a),XP(D)::QAR(F)
- S(f);OGATEB,P_SPINS(f),XP(D)::QAR(F),XP(h)
- S(f);N_GUARD,XP(H)::S(G)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- S(f);N_GUARD::S(G),XS(f)
- S(f);N_GUARD::S(G)
- P(c);OGATE::P(A),XP(c)
- Refutation
- P(e);XP(H)
- Try
- R(E);
- Vars
- S(a);N_GUARD,XR(E)::S(G)
- S(a);OGATEB,P_SPINS(a),XP(D)::R(E)
- S(f);OGATEB,P_SPINS(f),XP(D)::R(K),XP(h)
- S(f);N_GUARD,XP(H)::S(G)
- P(b);OGATEB::B(B)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- S(f);N_GUARD::S(G),XS(f)
- S(f);N_GUARD::S(G)
- P(c);OGATE::P(A),XP(c)
- Refutation
- P(e);XP(H)
- Try
- Q(F);P_PINS(a)
- Threat
- S(G)
- Refutation
- S(f);XP(D)
- Try
- Q(F);
- Vars
- S(a);OGATEB,P_SPINS(a),XP(D)::QAR(F)
- S(f);OGATEB,P_SPINS(f),XP(D)::R(K),XP(h)
- S(f);N_GUARD,XP(H)::S(G)
- P(b);OGATEB::B(B)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- S(f);N_GUARD::S(G),XS(f)
- S(f);N_GUARD::S(G)
- P(c);OGATE::P(A),XP(c)
- Refutation
- P(e);XP(H)
- Try
- Q(F);
- Vars
- S(a);N_GUARD,P_SPINS(a),XP(D)::S(G)
- S(f);N_GUARD,XP(H)::S(G)
- P(e);N_GUARD,XP(H)::QAR1(F)
- P(b);OGATEB::B(B)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- S(f);N_GUARD::S(G),XS(f)
- S(f);N_GUARD::S(G)
- P(c);OGATE::P(A),XP(c)
- Refutation
- P(h);XQ(F)
- Try
- P(H);XP(e)
- Vars
- S(a);OGATEB,P_SPINS(a),XP(D)::QAR(F)
- S(f);OGATEB,P_SPINS(f),XP(D)::QAR(F),XP(h)
- P(b);OGATEB::B(B)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- S(f);N_GUARD::S(G)
- S(f);N_GUARD::S(G),XS(f)
- P(c);OGATE::P(A),XP(c)
- Refutation
- P(h);XP(H)
- Try
- P(H);
- Vars
- S(a);OGATEB,P_SPINS(a),XP(D)::QAR(F)
- S(f);OGATEB,P_SPINS(f),XP(D)::QAR(F),XP(h)
- P(b);OGATEB::B(B)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- S(f);N_GUARD::S(G)
- S(f);N_GUARD::S(G),XS(f)
- P(c);OGATE::P(A),XP(c)
- Refutation
- P(g);XP(H)
- Try
- P(I);XS(f)
- Threat
- S(G)
- Vars
- S(a);OGATEB,P_SPINS(a),XP(D)::QAR(F)
- Refutation
- P(e);CHECK
- Try
- Actual
- Q(F);
- Vars
- S(a);N_GUARD,P_SPINS(a),XP(D)::S(G)
- S(f);N_GUARD,P_SPINS(f),XP(D)::S(G)
- S(f);N_GUARD,XP(H)::S(G)
- P(e);N_GUARD,XP(H)::QAR1(F)
- P(b);OGATEB::B(B)
- S(a);N_GUARD::S(G)
- S(a);N_GUARD::S(G),XS(a)
- S(f);N_GUARD::S(G),XS(f)
- S(f);N_GUARD::S(G)
- P(c);OGATE::P(A),XP(c)
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).