MESON Chess Problem Database
Problem Display
PID: 10579 (4KB2/2P3Q1/2k3N1/1R1R3r/P3PP2/1N5b/6pq/3rb3 w - - 0 1)
Goldschmeding, Cornelis
1st Prize, BCPS Ring Ty., 1966
#2
11 + 7
| 5862 | An ABC of Chess Problems | 1970 |
| 3772 | FIDE Album (1965-1967) | 1976 |
| 4640 | Chess Wizardry: The New ABC of Chess Problems | 1996 |
| 3389 | Belgian Solving Championship | 2011 |
SOLUTION
- SOUND
- Sets
- 1...Ra1
- 2.Sd4#
- 2.Rd6#
- 1...Rb1
- 2.Sd4#
- 2.Rd6#
- 1...Rc1
- 2.Sd4#
- 2.Rd6#
- 1...Rd2
- 2.Sa5#
- 2.Qc3#
- 1...Rd4
- 2.Sxd4#
- 1...Rh4
- 2.Se5#
- 2.Rdc5#
- 1...Re5+
- 2.Sxe5#
- 1...Rf5
- 2.Qd7#
- 2.c8Q#
- 2.c8R#
- 1...Rh6
- 2.Se5#
- 2.Rdc5#
- 1...Rh7
- 2.Se5#
- 2.Rdc5#
- 1...Rh8
- 2.Se5#
- 2.Rdc5#
- 1...Bd2
- 2.Sd4#
- 2.Rd6#
- 1...Bf2
- 2.Sa5#
- 1...Bc3
- 2.Qxc3#
- 1...Bg3
- 2.Sa5#
- 2.Qc3#
- 1...Bh4
- 2.Sa5#
- 2.Qc3#
- 1...Ba5
- 2.Sxa5#
- 1...Bf5
- 2.Se5#
- 2.Rdc5#
- 1...Bd7+
- 2.Qxd7#
- 1...Ra1
- Tries
- 1.Bc5?
- threat
- 2.Rb6#
- 1...Re5+
- 2.Sxe5#
- 1...Bd7+
- 2.Qxd7#
- 1...Ba5
- 2.Sxa5#
- 1...Rh8+!
- threat
- 1.Rxd1?
- threat
- 2.Sd4#
- 2.Rd6#
- 1...Re5+
- 2.Sxe5#
- 1...Bd7+
- 2.Qxd7#
- 1...Qxf4
- 2.Sd4#
- 1...g1Q
- 2.Rd6#
- 1...g1B
- 2.Rd6#
- 1...Qg1
- 2.Rd6#
- 1...Rd5
- 2.exd5#
- 1...Bd2
- 2.Sd4#
- 1...Bf2
- 2.Sa5#
- 2.Rd6#
- 1...Bc3
- 2.Rd6#
- 1...Bb4
- 2.Sd4#
- 1...Rxb5!
- threat
- 1.Rd2?
- threat
- 2.Sd4#
- 2.Sa5#
- 1...Re5+
- 2.Sxe5#
- 1...Bd7+
- 2.Qxd7#
- 1...Rxd2
- 2.Sa5#
- 1...Bxd2
- 2.Sd4#
- 1...g1Q
- 2.Sa5#
- 1...g1B
- 2.Sa5#
- 1...Qg1
- 2.Sa5#
- 1...Rd5
- 2.Sa5#
- 2.exd5#
- 1...Bf2
- 2.Sa5#
- 1...Rxb5!
- threat
- 1.Rf5?
- threat
- 2.Se5#
- 2.c8Q#
- 2.c8R#
- 1...Rd8+
- 2.cxd8S#
- 1...Rxf5
- 2.c8Q#
- 2.c8R#
- 1...Bxf5
- 2.Se5#
- 1...Rd7
- 2.Qxd7#
- 1...g1Q
- 2.Se5#
- 2.c8Q#
- 2.c8R#
- 1...g1S
- 2.Se5#
- 2.c8Q#
- 2.c8R#
- 1...g1B
- 2.Se5#
- 2.c8Q#
- 2.c8R#
- 1...g1R
- 2.Se5#
- 2.c8Q#
- 2.c8R#
- 1...Qg1
- 2.Se5#
- 2.c8Q#
- 2.c8R#
- 1...Qg3
- 2.Se5#
- 2.c8Q#
- 2.c8R#
- 1...Qh1
- 2.Se5#
- 2.c8Q#
- 2.c8R#
- 1...Ra1
- 2.Sd4#
- 2.Se5#
- 2.Qd7#
- 2.c8Q#
- 2.c8R#
- 1...Rb1
- 2.Sd4#
- 2.Se5#
- 2.Qd7#
- 2.c8Q#
- 2.c8R#
- 1...Rc1
- 2.Sd4#
- 2.Se5#
- 2.Qd7#
- 2.c8Q#
- 2.c8R#
- 1...Rd2
- 2.Sa5#
- 2.Se5#
- 2.Qc3#
- 2.c8Q#
- 2.c8R#
- 1...Rd3
- 2.Se5#
- 2.c8Q#
- 2.c8R#
- 1...Rd4
- 2.Sxd4#
- 2.Se5#
- 2.c8Q#
- 2.c8R#
- 1...Rd5
- 2.exd5#
- 2.c8Q#
- 2.c8R#
- 1...Rd6
- 2.Se5#
- 2.c8Q#
- 2.c8R#
- 1...Rh4
- 2.Se5#
- 2.Rfc5#
- 2.c8Q#
- 2.c8R#
- 1...Rg5
- 2.Se5#
- 2.c8Q#
- 2.c8R#
- 1...Rh6
- 2.Se5#
- 2.Rfc5#
- 2.c8Q#
- 2.c8R#
- 1...Rh7
- 2.Se5#
- 2.Rfc5#
- 2.c8Q#
- 2.c8R#
- 1...Rh8
- 2.Se5#
- 2.Rfc5#
- 2.c8Q#
- 2.c8R#
- 1...Bd2
- 2.Sd4#
- 2.Se5#
- 2.Qd7#
- 2.c8Q#
- 2.c8R#
- 1...Bf2
- 2.Sa5#
- 2.Se5#
- 2.c8Q#
- 2.c8R#
- 1...Bc3
- 2.Qxc3#
- 2.c8Q#
- 2.c8R#
- 1...Bg3
- 2.Sa5#
- 2.Se5#
- 2.Qc3#
- 2.c8Q#
- 2.c8R#
- 1...Bb4
- 2.Se5#
- 2.c8Q#
- 2.c8R#
- 1...Bh4
- 2.Sa5#
- 2.Se5#
- 2.Qc3#
- 2.c8Q#
- 2.c8R#
- 1...Ba5
- 2.Sxa5#
- 2.Se5#
- 1...Bg4
- 2.Se5#
- 2.c8Q#
- 2.c8R#
- 1...Qxf4!
- threat
- 1.Rxh5?
- threat
- 2.Se5#
- 2.Rhc5#
- 1...Rd8+
- 2.cxd8S#
- 1...Qxf4
- 2.Rhc5#
- 1...Rd7
- 2.Rhc5#
- 1...g1Q
- 2.Se5#
- 1...g1B
- 2.Se5#
- 1...Qg1
- 2.Se5#
- 1...Rc1
- 2.Sd4#
- 2.Se5#
- 1...Rd5
- 2.exd5#
- 1...Bf2
- 2.Sa5#
- 2.Se5#
- 1...Bc3
- 2.Rhc5#
- 2.Qxc3#
- 1...Bb4
- 2.Se5#
- 1...Bf5
- 2.Se5#
- 1...Bd7+!
- threat
- 1.Qf6+?
- 1...Be6
- 2.c8Q#
- 2.c8R#
- 1...Kxc7!
- 1...Be6
- 1.f5?
- threat
- 2.Rdc5#
- 2.Qd7#
- 1...Qe5+
- 2.Sxe5#
- 1...Qxc7
- 2.Rdc5#
- 1...Rxd5
- 2.exd5#
- 1...Rxf5
- 2.Qd7#
- 1...Bxf5
- 2.Rdc5#
- 1...g1Q
- 2.Qd7#
- 1...g1B
- 2.Qd7#
- 1...Qg1
- 2.Se5#
- 2.Qd7#
- 2.c8Q#
- 2.c8R#
- 1...Rc1
- 2.Sd4#
- 2.Qd7#
- 1...Rh7
- 2.Rdc5#
- 1...Bf2
- 2.Sa5#
- 2.Qd7#
- 1...Bb4
- 2.Qd7#
- 1...Qd6!
- threat
- 1.c8S?
- threat
- 2.Sa7#
- 2.Rbc5#
- 2.Rb6#
- 2.Qb7#
- 1...Re5+
- 2.Sxe5#
- 1...Bd7+
- 2.Qxd7#
- 1...Rdxd5
- 2.Sa7#
- 2.Rb6#
- 2.Qb7#
- 1...Rhxd5
- 2.Sa7#
- 2.Rb6#
- 2.Qb7#
- 1...g1Q
- 2.Qb7#
- 1...g1B
- 2.Qb7#
- 1...Qg1
- 2.Qb7#
- 1...Rc1
- 2.Sd4#
- 2.Sa7#
- 2.Rb6#
- 2.Rd6#
- 2.Qb7#
- 1...Rh7
- 2.Se5#
- 2.Sa7#
- 2.Rbc5#
- 2.Rb6#
- 2.Rdc5#
- 1...Bf2
- 2.Sa5#
- 2.Qb7#
- 1...Bb4
- 2.Sa7#
- 2.Rb6#
- 2.Qb7#
- 1...Ba5
- 2.Sxa5#
- 2.Sa7#
- 2.Rbc5#
- 2.Qb7#
- 1...Bxc8!
- threat
- 1.c8B?
- threat
- 2.Bb7#
- 2.Qb7#
- 1...Re5+
- 2.Sxe5#
- 1...Bd7+
- 2.Qxd7#
- 1...Rh7
- 2.Se5#
- 2.Bb7#
- 2.Rdc5#
- 1...Bxc8!
- threat
- 1.Bc5?
- Keys
- 1.Sd2!
- threat
- 2.Rd6#
- 2.Qc3#
- 1...Re5+
- 2.Sxe5#
- 1...Bd7+
- 2.Qxd7#
- 1...Qxf4
- 2.Qc3#
- 1...Rxd2
- 2.Qc3#
- 1...Rxd5
- 2.exd5#
- 1...Bxd2
- 2.Rd6#
- 1...g1Q
- 2.Rd6#
- 1...g1B
- 2.Rd6#
- 1...Qg1
- 2.Rd6#
- 1...Qg3
- 2.Rd6#
- 1...Rc1
- 2.Rd6#
- 1...Bf2
- 2.Rd6#
- threat
- 1.Sd2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 9
- REMOVED MATES = 3
- Sets
- R(a);N_GUARD::S(A),XR(a)
- R(f);CHECK,N_GUARD::S(G),XR(f)
- B(b);N_GUARD::S(A)
- B(b);N_GUARD::QAR(I),XB(b)
- B(b);N_GUARD::S(A),XB(b)
- B(e);CHECK,N_GUARD::QAB1(I),XB(e)
- Tries
- Try
- B(K);
- Threat
- R1(E)
- Vars
- R(f);CHECK,N_GUARD::S(G),XR(f)
- B(e);CHECK,N_GUARD::QAB1(I),XB(e)
- B(b);N_GUARD::S(A),XB(b)
- Refutation
- R(f);CHECK
- Try
- R(F);XR(a)
- Threat
- DUALS(2)
- Vars
- R(f);CHECK,N_GUARD::S(G),XR(f)
- B(e);CHECK,N_GUARD::QAB1(I),XB(e)
- Q(d);XP(D)::S(A)
- P(c);::R1(F)
- Q(d);::R1(F)
- R(f);OGATE::P(C),XR(f)
- B(b);::S(A)
- B(b);::R1(F)
- Refutation
- R(f);XR(E)
- Try
- R(F);
- Threat
- DUALS(2)
- Vars
- R(f);CHECK,N_GUARD::S(G),XR(f)
- B(e);CHECK,N_GUARD::QAB1(I),XB(e)
- R(a);XR(F)::S(A)
- B(b);XR(F)::S(A)
- P(c);::S(A)
- Q(d);::S(A)
- B(b);::S(A)
- Refutation
- R(f);XR(E)
- Try
- R(F);
- Threat
- DUALS(3)
- Vars
- R(a);CHECK,OGATE::PXR(a)=S
- R(f);XR(F)::P=Q
- B(e);XR(F)::S(G)
- R(a);N_GUARD::QAB1(I),XR(a)
- Refutation
- Q(d);XP(D)
- Try
- R(F);XR(f)
- Threat
- DUALS(2)
- Vars
- R(a);CHECK,OGATE::PXR(a)=S
- Q(d);XP(D)::R1(F)
- R(a);::R1(F)
- P(c);::S(G)
- Q(d);::S(G)
- R(a);OGATE::P(C),XR(a)
- B(b);::S(G)
- B(e);::S(G)
- Refutation
- B(e);CHECK
- Try
- Q(I);CHECK
- Vars
- B(e);P_SPINB(e)::P=Q
- Refutation
- K(g);P-FLIGHT,XP(H)
- Try
- P(D);
- Threat
- DUALS(2)
- Vars
- Q(d);CHECK,N_GUARD::S(G),XQ(d)
- Q(d);XP(H)::R1(F)
- R(a);OGATE,XR(F)::P(C),XR(a)
- R(f);XP(D)::QAB1(I)
- B(e);XP(D)::R1(F)
- P(c);::QAB1(I)
- R(f);::R1(F)
- B(b);::QAB1(I)
- Refutation
- Q(d);
- Try
- P(H);
- Threat
- DUALS(4)
- Vars
- R(f);CHECK,N_GUARD::S(G),XR(f)
- B(e);CHECK,N_GUARD::QAB1(I),XB(e)
- P(c);::QAB1(I)
- Q(d);::QAB1(I)
- Refutation
- B(e);XS(H)
- Try
- P(H);
- Threat
- DUALS(2)
- Vars
- R(f);CHECK,N_GUARD::S(G),XR(f)
- B(e);CHECK,N_GUARD::QAB1(I),XB(e)
- Refutation
- B(e);XB(H)
- Try
- Actual
- S(A);
- Threat
- DUALS(2)
- Vars
- R(f);CHECK,N_GUARD::S(G),XR(f)
- B(e);CHECK,N_GUARD::QAB1(I),XB(e)
- Q(d);XP(D)::QAR(I)
- R(a);XS(A)::QAR(I)
- R(f);OGATE,XR(F)::P(C),XR(f)
- B(b);XS(A)::R1(F)
- P(c);::R1(F)
- Q(d);::R1(F)
- R(a);::R1(F)
- B(b);::R1(F)
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Implemented with HTML5, MySQL, Perl (with, inter alia, CGI::Simple, HTML::Template & XML::LibXML) &
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