MESON Chess Problem Database
Problem Display
PID: 92154 (5Q1n/q5n1/2B5/4pp2/2b2k1N/4r1RK/3B1PP1/2b3N1 w - - 0 1)
Wielgos, Oskar
Schach-Aktiv, 1986
#2
9 + 9
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qb8
- 2.fxe3#
- 1...Qa1
- 2.fxe3#
- 1...Qa2
- 2.fxe3#
- 1...Qa4
- 2.fxe3#
- 1...Qa5
- 2.fxe3#
- 1...Qa6
- 2.fxe3#
- 1...Qb7
- 2.fxe3#
- 1...Qc7
- 2.fxe3#
- 1...Qd7
- 2.fxe3#
- 1...Qe7
- 2.fxe3#
- 1...Qf7
- 2.fxe3#
- 1...Qa8
- 2.fxe3#
- 1...Ba2
- 2.Se2#
- 1...Be2
- 2.Sxe2#
- 1...Bb3
- 2.Se2#
- 1...Be6
- 2.Se2#
- 1...Bf7
- 2.Se2#
- 1...Bg8
- 2.Se2#
- 1...Sh5
- 2.Qh6#
- 2.Qxf5#
- 1...Se6
- 2.Qxf5#
- 1...Se8
- 2.Qh6#
- 2.Qxf5#
- 1...Sg6
- 2.Sxg6#
- 1...Sf7
- 2.Sg6#
- 1...e4
- 2.Qd6#
- 1...Qb8
- Tries
- 1.Kh2?
- threat
- 2.Sh3#
- 1...e4
- 2.Qd6#
- 1...Bd5!
- threat
- 1.Sgf3?
- threat
- 2.Rg4#
- 1...Qf7
- 2.fxe3#
- 1...Sf7
- 2.Sg6#
- 1...Bf7!
- threat
- 1.Shf3?
- threat
- 2.Rg4#
- 1...Qf7
- 2.fxe3#
- 1...Bf7
- 2.Se2#
- 1...Sf7!
- threat
- 1.Bxe3+?
- 1...Bxe3
- 2.Rg4#
- 1...Qxe3!
- 1...Bxe3
- 1.Qe7?
- threat
- 2.Rf3#
- 2.Qg5#
- 1...Qxe7
- 2.fxe3#
- 1...Bxd2
- 2.Qg5#
- 1...Be2
- 2.Sxe2#
- 2.Qg5#
- 1...Se6
- 2.Rf3#
- 1...Sf7
- 2.Sg6#
- 2.Rf3#
- 1...e4
- 2.Qd6#
- 1...Bd5!
- threat
- 1.Qf6?
- threat
- 2.Rf3#
- 2.Qg5#
- 2.Qh6#
- 1...Bxd2
- 2.Qg5#
- 2.Qh6#
- 1...Qe7
- 2.Rf3#
- 2.fxe3#
- 1...Be2
- 2.Sxe2#
- 2.Qg5#
- 2.Qh6#
- 1...Se6
- 2.Rf3#
- 2.Qxf5#
- 1...Sg6
- 2.Sxg6#
- 2.Rf3#
- 2.Qg5#
- 1...Sf7
- 2.Sg6#
- 2.Rf3#
- 1...e4
- 2.Qd6#
- 1...Bd5!
- threat
- 1.Qd8?
- threat
- 2.Rf3#
- 2.Qg5#
- 1...Bxd2
- 2.Qg5#
- 1...e4
- 2.Qd6#
- 1...Qe7
- 2.fxe3#
- 1...Be2
- 2.Sxe2#
- 2.Qg5#
- 1...Se6
- 2.Rf3#
- 1...Sf7
- 2.Sg6#
- 2.Rf3#
- 1...Bd5!
- threat
- 1.Qxh8?
- threat
- 2.Sg6#
- 2.Qh6#
- 1...e4
- 2.Sg6#
- 1...Qe7
- 2.Sg6#
- 2.fxe3#
- 1...Qf7
- 2.Qh6#
- 2.fxe3#
- 1...Bf7
- 2.Se2#
- 2.Qh6#
- 1...Se6
- 2.Sg6#
- 1...Bd5!
- threat
- 1.f3?
- threat
- 2.Rg4#
- 1...e4
- 2.Qd6#
- 1...Bf7
- 2.Se2#
- 1...Sf7
- 2.Sg6#
- 1...Qf7!
- threat
- 1.Kh2?
- Keys
- 1.Bf3!
- threat
- 2.Rg4#
- 1...e4
- 2.Qd6#
- 1...Qf7
- 2.fxe3#
- 1...Bf7
- 2.Se2#
- 1...Sf7
- 2.Sg6#
- threat
- 1.Bf3!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 18
- Sets
- Q(g);N_GUARD::P(C),XR(b)
- Q(g);N_GUARD,N_SPINP(f)::P(C),XR(b)
- B(c);N_GUARD::S(A)
- B(c);N_GUARD::S(A),XB(c)
- B(c);N_GUARD,N_SPINP(f)::S(A)
- S(h);N_GUARD::QAR1(I),XP(f)
- S(i);N_GUARD::S(G),XS(i)
- S(i);N_GUARD,N_SPINP(f)::S(G)
- P(e);OGATEB::QAB(I)
- Tries
- Try
- K(F);N_SPINR(E),P-FLIGHT
- Threat
- S(A)
- Vars
- P(e);OGATEB::QAB(I)
- Refutation
- B(c);
- Try
- S(A);N_SPINR(E)
- Threat
- R1(E)
- Vars
- Q(g);N_GUARD,N_SPINP(f)::P(C),XR(b)
- S(i);N_GUARD,N_SPINP(f)::S(G)
- Refutation
- B(c);N_SPINP(f)
- Try
- S(G);N_SPINR(E)
- Threat
- R1(E)
- Vars
- Q(g);N_GUARD,N_SPINP(f)::P(C),XR(b)
- B(c);N_GUARD,N_SPINP(f)::S(A)
- Refutation
- S(i);N_SPINP(f)
- Try
- B(B);CHECK,N_SPINR(E),XR(b)
- Vars
- B(a);XB(B)::R1(E)
- Refutation
- Q(g);P_PINR(E),XB(B)
- Try
- Q(I);N_PINP(f)
- Threat
- DUALS(2)
- Vars
- Q(g);N_GUARD,XQ(I)::P(C),XR(b)
- B(a);N_SPINR(b),XB(B)::QAB1(I)
- S(h);::R1(E)
- P(e);OGATEB::QAB(I)
- Refutation
- B(c);
- Try
- Q(I);
- Threat
- DUALS(3)
- Vars
- P(e);OGATEB::QAB(I)
- Refutation
- B(c);
- Try
- Q(I);N_PINP(f)
- Threat
- DUALS(2)
- Vars
- B(a);N_SPINR(b),XB(B)::QAB1(I)
- P(e);OGATEB::QAB(I)
- Q(g);N_GUARD::P(C),XR(b)
- S(h);::R1(E)
- Refutation
- B(c);
- Try
- Q(I);N_PINP(f),XS(i)
- Threat
- DUALS(2)
- Vars
- P(e);::S(G)
- S(h);::S(G)
- Refutation
- B(c);
- Try
- P(C);N_SPINR(E)
- Threat
- R1(E)
- Vars
- P(e);OGATEB::QAB(I)
- B(c);N_GUARD,N_SPINP(f)::S(A)
- S(i);N_GUARD,N_SPINP(f)::S(G)
- Refutation
- Q(g);N_SPINP(f)
- Try
- Actual
- B(H);N_SPINR(E)
- Threat
- R1(E)
- Vars
- P(e);OGATEB::QAB(I)
- Q(g);N_GUARD,N_SPINP(f)::P(C),XR(b)
- B(c);N_GUARD,N_SPINP(f)::S(A)
- S(i);N_GUARD,N_SPINP(f)::S(G)
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).