MESON Chess Problem Database
Problem Display
PID: 15555 (3b4/1Kp2b2/1N2nQ2/pBkrP3/2rNP3/Pn1P4/2q5/1R4B1 w - - 0 1)
Wielgos, Oskar
3rd Prize, Schach-Aktiv, 1985
#2
11 + 10
SOLUTION
- SOUND
- Sets
- 1...Rc3
- 2.Sa4#
- 1...Ra4
- 2.Sxa4#
- 1...Rxe5
- 2.Qxe5#
- 1...Rd7
- 2.Sxd7#
- 1...Sa1
- 2.Sxe6#
- 1...Sc1
- 2.Sxe6#
- 1...Sd2
- 2.Sxe6#
- 1...Sxd4
- 2.Qc6#
- 1...Sf4
- 2.Qc6#
- 1...Sg5
- 2.Qc6#
- 1...Sg7
- 2.Qc6#
- 1...Sf8
- 2.Qc6#
- 1...Rc3
- Tries
- 1.Ka6?
- threat
- 2.Sxb3#
- 2.Sxe6#
- 1...Rcxd4
- 2.Sa4#
- 1...Rdxd4
- 2.Sd7#
- 1...Rxe5
- 2.Qxe5#
- 1...Sexd4
- 2.Qc6#
- 1...Qf2
- 2.Sxb3#
- 1...Sa1
- 2.Sb3#
- 2.Sxe6#
- 1...Sc1
- 2.Sb3#
- 2.Sxe6#
- 1...Sd2
- 2.Sb3#
- 2.Sxe6#
- 1...Sf4
- 2.Sxb3#
- 2.Se6#
- 2.Qc6#
- 1...Sg5
- 2.Sxb3#
- 2.Se6#
- 2.Qc6#
- 1...Sg7
- 2.Sxb3#
- 2.Se6#
- 2.Qc6#
- 1...Sf8
- 2.Sxb3#
- 2.Se6#
- 2.Qc6#
- 1...Sbxd4!
- threat
- 1.Ba4?
- threat
- 2.Sxb3#
- 2.Sxe6#
- 1...Rxa4
- 2.Sxa4#
- 1...Rdxd4
- 2.Sd7#
- 1...Rxe5
- 2.Qxe5#
- 1...Sbxd4
- 2.Rb5#
- 1...Sexd4
- 2.Qc6#
- 1...Qf2
- 2.Sxb3#
- 1...Sa1
- 2.Sb3#
- 2.Sxe6#
- 2.Rb5#
- 1...Sc1
- 2.Sb3#
- 2.Sxe6#
- 2.Rb5#
- 1...Sd2
- 2.Sb3#
- 2.Sxe6#
- 2.Rb5#
- 1...Sf4
- 2.Sxb3#
- 2.Se6#
- 2.Qc6#
- 1...Sg5
- 2.Sxb3#
- 2.Se6#
- 2.Qc6#
- 1...Sg7
- 2.Sxb3#
- 2.Se6#
- 2.Qc6#
- 1...Sf8
- 2.Sxb3#
- 2.Se6#
- 2.Qc6#
- 1...Rcxd4!
- threat
- 1.Bxc4?
- threat
- 2.Sxb3#
- 2.Sxe6#
- 2.Sa4#
- 1...Qxd3
- 2.Sxb3#
- 2.Sxe6#
- 1...Rxd4
- 2.Sa4#
- 2.Sd7#
- 1...Rxe5
- 2.Qxe5#
- 1...Sbxd4
- 2.Rb5#
- 1...Sexd4
- 2.Sa4#
- 2.Qc6#
- 1...cxb6
- 2.Sxb3#
- 2.Sxe6#
- 1...Qf2
- 2.Sxb3#
- 1...Be8
- 2.Sxb3#
- 2.Sxe6#
- 1...Sa1
- 2.Sb3#
- 2.Sxe6#
- 2.Rb5#
- 1...Sc1
- 2.Sb3#
- 2.Sxe6#
- 2.Rb5#
- 1...Sd2
- 2.Sb3#
- 2.Sxe6#
- 2.Rb5#
- 1...Sf4
- 2.Sxb3#
- 2.Se6#
- 2.Sa4#
- 2.Qc6#
- 1...Sg5
- 2.Sxb3#
- 2.Se6#
- 2.Sa4#
- 2.Qc6#
- 1...Sg7
- 2.Sxb3#
- 2.Se6#
- 2.Sa4#
- 2.Qc6#
- 1...Sf8
- 2.Sxb3#
- 2.Se6#
- 2.Sa4#
- 2.Qc6#
- 1...a4
- 2.Sxb3#
- 2.Sxe6#
- 2.Sxa4#
- 1...Qxc4!
- threat
- 1.Bc6?
- threat
- 2.Sxb3#
- 2.Sxe6#
- 1...Rcxd4
- 2.Sa4#
- 1...Rdxd4
- 2.Sd7#
- 1...Rxe5
- 2.Qxe5#
- 1...Sbxd4
- 2.Rb5#
- 1...Qf2
- 2.Sxb3#
- 1...Sa1
- 2.Sb3#
- 2.Sxe6#
- 2.Rb5#
- 1...Sc1
- 2.Sb3#
- 2.Sxe6#
- 2.Rb5#
- 1...Sd2
- 2.Sb3#
- 2.Sxe6#
- 2.Rb5#
- 1...Sf4
- 2.Sxb3#
- 2.Se6#
- 1...Sg5
- 2.Sxb3#
- 2.Se6#
- 1...Sg7
- 2.Sxb3#
- 2.Se6#
- 1...Sf8
- 2.Sxb3#
- 2.Se6#
- 1...Sexd4!
- threat
- 1.Qe7+?
- 1...Rd6
- 2.Sd7#
- 1...Bxe7!
- 1...Rd6
- 1.Ka6?
- Keys
- 1.Ba6!
- threat
- 2.Sxb3#
- 2.Sxe6#
- 1...Rcxd4
- 2.Sa4#
- 1...Rdxd4
- 2.Sd7#
- 1...Rxe5
- 2.Qxe5#
- 1...Sbxd4
- 2.Rb5#
- 1...Sexd4
- 2.Qc6#
- 1...Qf2
- 2.Sxb3#
- 1...Sa1
- 2.Sb3#
- 2.Sxe6#
- 2.Rb5#
- 1...Sc1
- 2.Sb3#
- 2.Sxe6#
- 2.Rb5#
- 1...Sd2
- 2.Sb3#
- 2.Sxe6#
- 2.Rb5#
- 1...Sf4
- 2.Sxb3#
- 2.Se6#
- 2.Qc6#
- 1...Sg5
- 2.Sxb3#
- 2.Se6#
- 2.Qc6#
- 1...Sg7
- 2.Sxb3#
- 2.Se6#
- 2.Qc6#
- 1...Sf8
- 2.Sxb3#
- 2.Se6#
- 2.Qc6#
- threat
- 1.Ba6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 4
- REMOVED MATES = 10
- Sets
- R(c);N_GUARD::S(I)
- R(c);N_GUARD::S(I),XR(c)
- R(f);OGATE,XP(H)::QAR2(J),XR(f)
- R(f);N_GUARD::S(I),XR(f)
- S(b);::B(B)+S(E),DCHECK,XS(g)
- S(g);OGATE,P_SPINS(g),XS(E)::QAR1(J)
- S(g);OGATE::QAR1(J)
- Tries
- Try
- K(K);S_FLIGHT
- Threat
- DUALS(2)
- Vars
- R(c);N_GUARD,P_SPINR(c),XS(E)::S(I)
- R(f);N_GUARD,P_SPINR(f),XS(E)::S(I)
- R(f);OGATE,XP(H)::QAR2(J),XR(f)
- S(g);OGATE,P_SPINS(g),XS(E)::QAR1(J)
- Q(a);::S(E),XS(b)
- Refutation
- S(b);P_SPINS(b),XS(E)
- Try
- B(G);
- Threat
- DUALS(2)
- Vars
- R(c);XB(G)::S(I),XR(c)
- R(f);N_GUARD,P_SPINR(f),XS(E)::S(I)
- R(f);OGATE,XP(H)::QAR2(J),XR(f)
- S(b);OGATE,P_SPINS(b),XS(E)::R1(A)
- S(g);OGATE,P_SPINS(g),XS(E)::QAR1(J)
- Q(a);::S(E),XS(b)
- Refutation
- R(c);P_SPINR(c),XS(E)
- Try
- B(G);XR(c)
- Threat
- DUALS(3)
- Vars
- R(f);OGATE,XP(H)::QAR2(J),XR(f)
- S(b);OGATE,P_SPINS(b),XS(E)::R1(A)
- Q(a);::S(E),XS(b)
- Refutation
- Q(a);XB(G)
- Try
- B(G);
- Threat
- DUALS(2)
- Vars
- R(c);N_GUARD,P_SPINR(c),XS(E)::S(I)
- R(f);N_GUARD,P_SPINR(f),XS(E)::S(I)
- R(f);OGATE,XP(H)::QAR2(J),XR(f)
- S(b);OGATE,P_SPINS(b),XS(E)::R1(A)
- Q(a);::S(E),XS(b)
- Refutation
- S(g);P_SPINS(g),XS(E)
- Try
- Q(J);CHECK
- Vars
- R(f);P_SPINR(f)::S(I)
- Refutation
- B(j);XQ(J)
- Try
- Actual
- B(G);
- Threat
- DUALS(2)
- Vars
- R(c);N_GUARD,P_SPINR(c),XS(E)::S(I)
- R(f);N_GUARD,P_SPINR(f),XS(E)::S(I)
- R(f);OGATE,XP(H)::QAR2(J),XR(f)
- S(b);OGATE,P_SPINS(b),XS(E)::R1(A)
- S(g);OGATE,P_SPINS(g),XS(E)::QAR1(J)
- Q(a);::S(E),XS(b)
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).