MESON Chess Problem Database
Problem Display
PID: 176413 (3N3B/5P2/2P1pR2/nK1BR3/Q1NkP1q1/3p4/p2P3r/8 w - - 0 1)
Doukhan, Gerard
Wiedenhoff, Claude
5th HM., Schach-Echo, 1981
#2
12 + 7
| 6490 | yacpdb | 2018 |
SOLUTION
- SOUND
- Sets
- 1...Qd1
- 2.Sxe6#
- 1...Qe2
- 2.Sxe6#
- 1...Qf3
- 2.Sxe6#
- 1...Qh5
- 2.Sxe6#
- 1...Qg1
- 2.Sxe6#
- 1...Qg2
- 2.Sxe6#
- 1...Qg3
- 2.Sxe6#
- 1...Qxe4
- 2.Sxe6#
- 1...Qf4
- 2.Sxe6#
- 1...Qh4
- 2.Sxe6#
- 1...Qg5
- 2.Sxe6#
- 1...Qg6
- 2.Sxe6#
- 1...Qg7
- 2.Sxe6#
- 1...Qg8
- 2.Sxe6#
- 1...Sxc6
- 2.Sxc6#
- 1...a1Q
- 2.Qxa1#
- 1...a1S
- 2.Qxa1#
- 1...a1B
- 2.Qxa1#
- 1...a1R
- 2.Qxa1#
- 1...Qd1
- Tries
- 1.Rg5?
- threat
- 2.Sxa5#
- 1...Qxg5
- 2.Sxe6#
- 1...Rxd2
- 2.Rxe6#
- 1...Sxc4
- 2.Qxc4#
- 1...Sxc6
- 2.Sxc6#
- 1...a1Q
- 2.Qxa1#
- 1...a1R
- 2.Qxa1#
- 1...Qd1
- 2.Sxe6#
- 1...Sb3
- 2.Sb2#
- 2.Sa3#
- 2.Se3#
- 2.Sa5#
- 2.Se5#
- 2.Sb6#
- 2.Sd6#
- 1...Sb7
- 2.Sb2#
- 2.Sa3#
- 2.Se3#
- 2.Sa5#
- 2.Se5#
- 2.Sb6#
- 2.Sd6#
- 1...Qf5!
- threat
- 1.Rexe6?
- threat
- 2.Sxa5#
- 1...Qxe6
- 2.Sxe6#
- 1...Rxd2
- 2.Rg6#
- 1...Sxc4
- 2.Qxc4#
- 1...Sxc6
- 2.Sxc6#
- 1...a1Q
- 2.Qxa1#
- 1...a1R
- 2.Qxa1#
- 1...Qd1
- 2.Rh6#
- 1...Sb3
- 2.Sb2#
- 2.Sa3#
- 2.Se3#
- 2.Sa5#
- 2.Se5#
- 2.Sb6#
- 2.Sd6#
- 1...Sb7
- 2.Sb2#
- 2.Sa3#
- 2.Se3#
- 2.Sa5#
- 2.Se5#
- 2.Sb6#
- 2.Sd6#
- 1...Qxe4!
- threat
- 1.Rf2?
- threat
- 2.Sxa5#
- 1...Sxc4
- 2.Qxc4#
- 1...Sxc6
- 2.Sxc6#
- 1...a1Q
- 2.Qxa1#
- 1...a1R
- 2.Qxa1#
- 1...Qd1
- 2.Sxe6#
- 1...Qg7
- 2.Sxe6#
- 1...Sb3
- 2.Sb2#
- 2.Sa3#
- 2.Se3#
- 2.Sa5#
- 2.Sb6#
- 2.Sd6#
- 1...Sb7
- 2.Sb2#
- 2.Sa3#
- 2.Se3#
- 2.Sa5#
- 2.Sb6#
- 2.Sd6#
- 1...Rxh8!
- threat
- 1.Rff5?
- threat
- 2.Sxa5#
- 2.Sxe6#
- 1...Qxf5
- 2.Sxa5#
- 1...Sxc4
- 2.Sxe6#
- 2.Qxc4#
- 1...Sxc6
- 2.Sxc6#
- 2.Sxe6#
- 1...exd5
- 2.Sxa5#
- 2.Se6#
- 1...exf5
- 2.Sxa5#
- 2.Se6#
- 1...a1Q
- 2.Sxe6#
- 2.Qxa1#
- 1...a1R
- 2.Sxe6#
- 2.Qxa1#
- 1...Qd1
- 2.Sxe6#
- 1...Qg6
- 2.Sxa5#
- 1...Rh6
- 2.Sxa5#
- 1...Sb3
- 2.Sb2#
- 2.Sa3#
- 2.Se3#
- 2.Sa5#
- 2.Sb6#
- 2.Sd6#
- 2.Sxe6#
- 1...Sb7
- 2.Sb2#
- 2.Sa3#
- 2.Se3#
- 2.Sa5#
- 2.Sb6#
- 2.Sd6#
- 2.Sxe6#
- 1...Rxd2!
- threat
- 1.Rg6?
- threat
- 2.Sxa5#
- 1...Rxd2
- 2.Rexe6#
- 1...Sxc4
- 2.Qxc4#
- 1...Sxc6
- 2.Sxc6#
- 1...a1Q
- 2.Qxa1#
- 1...a1R
- 2.Qxa1#
- 1...Qd1
- 2.Sxe6#
- 1...Sb3
- 2.Sb2#
- 2.Sa3#
- 2.Se3#
- 2.Sa5#
- 2.Sb6#
- 2.Sd6#
- 1...Sb7
- 2.Sb2#
- 2.Sa3#
- 2.Se3#
- 2.Sa5#
- 2.Sb6#
- 2.Sd6#
- 1...Rxh8!
- threat
- 1.Rh6?
- threat
- 2.Sxa5#
- 1...Sxc4
- 2.Qxc4#
- 1...Sxc6
- 2.Sxc6#
- 1...a1Q
- 2.Qxa1#
- 1...a1R
- 2.Qxa1#
- 1...Qd1
- 2.Sxe6#
- 2.Rexe6#
- 1...Qg7
- 2.Sxe6#
- 1...Sb3
- 2.Sb2#
- 2.Sa3#
- 2.Se3#
- 2.Sa5#
- 2.Sb6#
- 2.Sd6#
- 1...Sb7
- 2.Sb2#
- 2.Sa3#
- 2.Se3#
- 2.Sa5#
- 2.Sb6#
- 2.Sd6#
- 1...Rxd2!
- threat
- 1.Qa3?
- threat
- 2.Qb2#
- 2.Qc5#
- 2.Qc3#
- 1...Sxc4
- 2.Qc3#
- 1...a1Q
- 2.Qc5#
- 2.Qxa1#
- 1...a1B
- 2.Qc5#
- 2.Qxa1#
- 1...Sb3
- 2.Qb2#
- 1...Sb7
- 2.Qb2#
- 2.Qc3#
- 1...Rxd2!
- threat
- 1.Qb4?
- threat
- 2.Qc3#
- 2.Qc5#
- 2.Qb2#
- 1...Sxc4
- 2.Qc3#
- 1...a1Q
- 2.Qc5#
- 1...a1B
- 2.Qc5#
- 1...Sb3
- 2.Qc3#
- 1...Sb7
- 2.Qc3#
- 2.Qb2#
- 1...Rxd2!
- threat
- 1.Qxa5?
- threat
- 2.Qc3#
- 2.Qb6#
- 2.Qa7#
- 1...a1Q
- 2.Qb6#
- 2.Qxa1#
- 1...a1B
- 2.Qb6#
- 2.Qxa1#
- 2.Qa7#
- 1...a1R
- 2.Qc3#
- 2.Qb6#
- 2.Qxa1#
- 1...Rxd2!
- threat
- 1.Rg5?
- Keys
- 1.Rfxe6!
- threat
- 2.Sxa5#
- 1...Rxd2
- 2.Rg5#
- 1...Sxc4
- 2.Qxc4#
- 1...Sxc6
- 2.Sxc6#
- 1...a1Q
- 2.Qxa1#
- 1...a1R
- 2.Qxa1#
- 1...Qd1
- 2.Rh5#
- 1...Sb3
- 2.Sb2#
- 2.Sa3#
- 2.Se3#
- 2.Sa5#
- 2.Sb6#
- 2.Sd6#
- 1...Sb7
- 2.Sb2#
- 2.Sa3#
- 2.Se3#
- 2.Sa5#
- 2.Sb6#
- 2.Sd6#
- threat
- 1.Rfxe6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 2
- REMOVED MATES = 15
- Sets
- Q(e);N_GUARD::S(K),XP(g)
- Q(e);N_GUARD,XP(D)::S(K),XP(g)
- S(f);XP(H)::S(K),XS(f)
- P(a);OGATE::QAB(B),XQ(a)
- P(a);OGATE::QAB(B),XS(a)
- P(a);OGATE::QAB(B),XB(a)
- P(a);OGATE::QAB(B),XR(a)
- Tries
- Try
- R(G);
- Threat
- QAR(B)+S(C),XS(f)
- Vars
- Q(e);N_GUARD,P_PINB(F),XR(G)::S(K),XP(g)
- R(b);N_GUARD,XP(A)::B(L)+R(I),XP(g)
- S(f);OGATE,P_SPINS(f),XS(C)::QAR1(B),XS(f)
- S(f);XP(H)::S(K),XS(f)
- P(a);OGATE::QAB(B),XQ(a)
- P(a);OGATE::QAB(B),XR(a)
- Q(e);N_GUARD::S(K),XP(g)
- Refutation
- Q(e);P_PINB(F)
- Try
- R(G);XP(g)
- Threat
- QAR(B)+S(C),XS(f)
- Vars
- Q(e);XR(G)::S(K),XQ(e)
- R(b);N_GUARD,XP(A)::B(L)+R(I)
- S(f);OGATE,P_SPINS(f),XS(C)::QAR1(B),XS(f)
- S(f);XP(H)::S(K),XS(f)
- P(a);OGATE::QAB(B),XQ(a)
- P(a);OGATE::QAB(B),XR(a)
- Q(e);N_GUARD::B(L)+R(I)
- Refutation
- Q(e);XP(D)
- Try
- R(I);
- Threat
- QAR(B)+S(C),XS(f)
- Vars
- S(f);OGATE,P_SPINS(f),XS(C)::QAR1(B),XS(f)
- S(f);XP(H)::S(K),XS(f)
- P(a);OGATE::QAB(B),XQ(a)
- P(a);OGATE::QAB(B),XR(a)
- Q(e);N_GUARD::S(K),XP(g)
- Refutation
- R(b);XB(L)
- Try
- R(I);
- Threat
- DUALS(2)
- Vars
- Q(e);XR(I)::QAR(B)+S(C),XS(f)
- Q(e);::S(K),XP(g)
- Q(e);::QAR(B)+S(C),XS(f)
- R(b);::QAR(B)+S(C),XS(f)
- Refutation
- R(b);XP(A)
- Try
- R(I);
- Threat
- QAR(B)+S(C),XS(f)
- Vars
- R(b);N_GUARD,XP(A)::B(L)+R(G),XP(g)
- S(f);OGATE,P_SPINS(f),XS(C)::QAR1(B),XS(f)
- S(f);XP(H)::S(K),XS(f)
- P(a);OGATE::QAB(B),XQ(a)
- P(a);OGATE::QAB(B),XR(a)
- Q(e);N_GUARD::S(K),XP(g)
- Refutation
- R(b);XB(L)
- Try
- R(I);
- Threat
- QAR(B)+S(C),XS(f)
- Vars
- S(f);OGATE,P_SPINS(f),XS(C)::QAR1(B),XS(f)
- S(f);XP(H)::S(K),XS(f)
- P(a);OGATE::QAB(B),XQ(a)
- P(a);OGATE::QAB(B),XR(a)
- Q(e);N_GUARD::S(K),XP(g)
- Refutation
- R(b);XP(A)
- Try
- Q(B);
- Threat
- DUALS(3)
- Vars
- S(f);XS(C)::QAB1(B)
- S(f);::QAB(B)
- Refutation
- R(b);XP(A)
- Try
- Q(B);
- Threat
- DUALS(3)
- Vars
- S(f);P_SPINS(f),XS(C)::QAB1(B)
- P(a);::QAB1(B)
- S(f);::QAB1(B)
- Refutation
- R(b);XP(A)
- Try
- Q(B);XS(f)
- Threat
- DUALS(3)
- Refutation
- R(b);XP(A)
- Try
- Actual
- R(I);XP(g)
- Threat
- QAR(B)+S(C),XS(f)
- Vars
- R(b);N_GUARD,XP(A)::B(L)+R(G)
- S(f);OGATE,P_SPINS(f),XS(C)::QAR1(B),XS(f)
- S(f);XP(H)::S(K),XS(f)
- P(a);OGATE::QAB(B),XQ(a)
- P(a);OGATE::QAB(B),XR(a)
- Q(e);N_GUARD::B(L)+R(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).