MESON Chess Problem Database
Problem Display
PID: 99440 (n3R1B1/1QPqB2K/5PP1/p2NkN1R/5p2/1b3P2/8/8 w - - 0 1)
Weenink, Henri Gerard Maria
Magyar Sakkvilag, 1927
#2
12 + 6
| 16055 | HGM Weenink (Euwe/Niemeijer/Rueb/Trotsenburg) | 1932 |
| 6490 | yacpdb | 2009 |
SOLUTION
- SOUND
- Sets
- 1...Qa4
- 2.Bd6#
- 1...Qb5
- 2.Bd6#
- 1...Qxf5
- 2.Bc5#
- 1...Qc6
- 2.Bd6#
- 1...Qe6
- 2.Bd6#
- 1...Qc8
- 2.Bd6#
- 1...Qxe8
- 2.Bd6#
- 1...Qd6
- 2.Bxd6#
- 1...Qxe7+
- 2.Rxe7#
- 1...Qd8
- 2.Bd6#
- 2.Bxd8#
- 1...Bd1
- 2.Qb2#
- 1...Ba2
- 2.Qb2#
- 1...Bc2
- 2.Qb2#
- 1...Ba4
- 2.Qb2#
- 1...Bc4
- 2.Qb2#
- 1...Bxd5
- 2.Qb2#
- 1...Qa4
- Tries
- 1.Kh6?
- threat
- 2.Bd6#
- 1...Qxf5
- 2.Bc5#
- 1...Qxe7
- 2.Rxe7#
- 1...Bxd5
- 2.Qb2#
- 1...Qd6
- 2.Bxd6#
- 1...Qxd5!
- threat
- 1.Kh8?
- threat
- 2.Bd6#
- 1...Qxf5
- 2.Bc5#
- 1...Qxe7
- 2.Rxe7#
- 1...Bxd5
- 2.Qb2#
- 1...Qd6
- 2.Bxd6#
- 1...Qxd5!
- threat
- 1.Sfe3+?
- 1...Qf5
- 2.Bc5#
- 1...Kd4!
- 1...Qf5
- 1.Sg3+?
- 1...Qf5
- 2.Bc5#
- 1...Kd4!
- 1...Qf5
- 1.Sd4+?
- 1...Qf5
- 2.Sc6#
- 2.Bc5#
- 1...Kxd4!
- 1...Qf5
- 1.Sh4+?
- 1...Qf5
- 2.Bc5#
- 1...Kd4!
- 1...Qf5
- 1.Sh6+?
- 1...Qf5
- 2.Bc5#
- 1...Kd4!
- 1...Qf5
- 1.Sg7+?
- 1...Qf5
- 2.Bc5#
- 1...Kd4!
- 1...Qf5
- 1.Bf7?
- threat
- 2.Bd6#
- 1...Qxf5
- 2.Bc5#
- 1...Qxe7
- 2.Rxe7#
- 1...Bxd5
- 2.Qb2#
- 1...Qd6
- 2.Bxd6#
- 1...Qxd5!
- threat
- 1.Qxb3?
- threat
- 2.Qb2#
- 2.Qc3#
- 1...Qxe7+
- 2.Rxe7#
- 1...Qxd5
- 2.Qxd5#
- 1...Qa4
- 2.Bd6#
- 1...Qb5
- 2.Bd6#
- 2.Qc3#
- 1...Qc6
- 2.Bd6#
- 1...Qe6
- 2.Bd6#
- 1...Qxc7!
- threat
- 1.Qb4?
- threat
- 2.Qe1#
- 2.Qc3#
- 2.Qd4#
- 2.Qe4#
- 2.Qxf4#
- 1...Qxe7+
- 2.Sfxe7#
- 2.Sg7#
- 2.Rxe7#
- 2.Qxe7#
- 1...Qxf5
- 2.Bc5#
- 2.Bd6#
- 2.Bd8#
- 2.Bf8#
- 2.Qc3#
- 2.Qe4#
- 2.Qxf4#
- 1...Qxd5
- 2.Se3#
- 2.Sg3#
- 2.Sd4#
- 2.Sh4#
- 2.Sd6#
- 2.Sh6#
- 2.Sg7#
- 1...Qxc7
- 2.Sfe3#
- 2.Sg3#
- 2.Sd4#
- 2.Sh4#
- 2.Sd6#
- 2.Sh6#
- 2.Sg7#
- 2.Qe1#
- 2.Qd4#
- 2.Qe4#
- 2.Qxf4#
- 1...Bxd5
- 2.Qc3#
- 2.Qb2#
- 2.Qd4#
- 1...Qe6
- 2.Qd4#
- 2.Qe4#
- 1...Qa4
- 2.Sfe3#
- 2.Sg3#
- 2.Sd4#
- 2.Sh4#
- 2.Sd6#
- 2.Sh6#
- 2.Sg7#
- 2.Bd6#
- 2.Qd6#
- 1...Qb5
- 2.Sfe3#
- 2.Sg3#
- 2.Sd4#
- 2.Sh4#
- 2.Sd6#
- 2.Sh6#
- 2.Sg7#
- 2.Bd6#
- 2.Qc3#
- 2.Qd6#
- 2.Qd4#
- 2.Qe4#
- 2.Qxf4#
- 1...Qc6
- 2.Sfe3#
- 2.Sg3#
- 2.Sd4#
- 2.Sh4#
- 2.Sd6#
- 2.Sh6#
- 2.Sg7#
- 2.Bd6#
- 2.Qe1#
- 2.Qd4#
- 2.Qe4#
- 2.Qxf4#
- 1...Bd1
- 2.Qc3#
- 2.Qb2#
- 2.Qd4#
- 2.Qe4#
- 2.Qxf4#
- 1...Bc2
- 2.Qc3#
- 2.Qb2#
- 2.Qd4#
- 2.Qxf4#
- 1...Bc4
- 2.Qc3#
- 2.Qb2#
- 1...axb4!
- threat
- 1.Qb6?
- threat
- 2.Qd4#
- 1...Qxe7+
- 2.Sfxe7#
- 2.Sg7#
- 2.Rxe7#
- 1...Qxf5
- 2.Ba3#
- 2.Bb4#
- 2.Bc5#
- 2.Bd6#
- 2.Bd8#
- 2.Bf8#
- 1...Qxd5
- 2.Se3#
- 2.Sg3#
- 2.Sd4#
- 2.Sh4#
- 2.Sd6#
- 2.Sh6#
- 2.Sg7#
- 1...Qa4
- 2.Sfe3#
- 2.Sg3#
- 2.Sd4#
- 2.Sh4#
- 2.Sd6#
- 2.Sh6#
- 2.Sg7#
- 2.Bd6#
- 2.Qd6#
- 2.Qe6#
- 1...Sxb6!
- threat
- 1.Qa7?
- threat
- 2.Qd4#
- 1...Qxe7+
- 2.Rxe7#
- 1...Qxf5
- 2.Ba3#
- 2.Bb4#
- 2.Bc5#
- 2.Bf8#
- 1...Qxd5
- 2.Se3#
- 2.Sg3#
- 2.Sd4#
- 2.Sh4#
- 2.Sd6#
- 2.Sh6#
- 2.Sg7#
- 1...Qa4
- 2.Sfe3#
- 2.Sg3#
- 2.Sd4#
- 2.Sh4#
- 2.Sd6#
- 2.Sh6#
- 2.Sg7#
- 2.Bd6#
- 1...Sb6!
- threat
- 1.Kh6?
- Keys
- 1.Qb5!
- threat
- 2.Qe2#
- 1...Qxe7+
- 2.Rxe7#
- 1...Qxb5
- 2.Bd6#
- 1...Qxf5
- 2.Bc5#
- 1...Qxd5
- 2.Bd8#
- 1...Bxd5
- 2.Qb2#
- 1...Qe6
- 2.Bd6#
- 1...Bd1
- 2.Qb2#
- 1...Bc2
- 2.Qb2#
- 1...Bc4
- 2.Qb2#
- threat
- 1.Qb5!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 1
- REMOVED MATES = 7
- Sets
- Q(e);N_PINB(I)::R(K)+B(I),DCHECK
- Q(e);N_PINB(I),P_PINP(F),P_SPINQ(e),XS(C)::R(K)+B(I)
- Q(e);N_PINB(I)::B(I)
- Q(e);N_PINB(I),XR(K)::B(I)
- Q(e);N_PINB(I)::R(K)+B(I),DCHECK,XQ(e)
- Q(e);CHECK,OGATE,P_SPINQ(e),XB(I)::R(K),XQ(e)
- B(a);OGATE::QAB(G)
- B(a);OGATE,XS(B)::QAB(G)
- Tries
- Try
- K(J);N_SPINB(I),P-FLIGHT
- Threat
- R(K)+B(I),DCHECK
- Vars
- Q(e);N_GUARD,P_SPINQ(e),XS(C)::R(K)+B(I)
- Q(e);OGATE,P_SPINQ(e),XB(I)::R(K),XQ(e)
- B(a);OGATE,XS(B)::QAB(G)
- Q(e);::R(K)+B(I),DCHECK,XQ(e)
- Refutation
- Q(e);XS(B)
- Try
- K(J);N_SPINB(I),P-FLIGHT
- Threat
- R(K)+B(I),DCHECK
- Vars
- Q(e);N_GUARD,P_SPINQ(e),XS(C)::R(K)+B(I)
- Q(e);OGATE,P_SPINQ(e),XB(I)::R(K),XQ(e)
- B(a);OGATE,XS(B)::QAB(G)
- Q(e);::R(K)+B(I),DCHECK,XQ(e)
- Refutation
- Q(e);XS(B)
- Try
- S(C);CHECK
- Vars
- Q(e);N_PINB(I),P_PINP(F),P_SPINQ(e)::R(K)+B(I)
- Refutation
- K(d);S_FLIGHT
- Try
- S(C);CHECK
- Vars
- Q(e);N_PINB(I),P_PINP(F),P_SPINQ(e)::R(K)+B(I)
- Refutation
- K(d);S_FLIGHT
- Try
- S(C);CHECK
- Refutation
- K(d);S_FLIGHT,XS(C)
- Try
- S(C);CHECK
- Vars
- Q(e);N_PINB(I),P_PINP(F),P_SPINQ(e)::R(K)+B(I)
- Refutation
- K(d);S_FLIGHT
- Try
- S(C);CHECK
- Vars
- Q(e);N_PINB(I),P_PINP(F),P_SPINQ(e)::R(K)+B(I)
- Refutation
- K(d);S_FLIGHT
- Try
- S(C);CHECK,N_SPINB(I)
- Vars
- Q(e);P_PINP(F),P_SPINQ(e)::R(K)+B(I)
- Refutation
- K(d);S_FLIGHT
- Try
- B(L);N_SPINB(I)
- Threat
- R(K)+B(I),DCHECK
- Vars
- Q(e);N_GUARD,P_PINP(F),P_SPINQ(e),XS(C)::R(K)+B(I)
- Q(e);OGATE,P_PINB(L),P_SPINQ(e),XB(I)::R(K),XQ(e)
- B(a);OGATE,XS(B)::QAB(G)
- Q(e);::R(K)+B(I),DCHECK,XQ(e)
- Refutation
- Q(e);XS(B)
- Try
- Q(G);XB(a)
- Threat
- DUALS(2)
- Vars
- Q(e);CHECK,OGATE,P_SPINQ(e),XB(I)::R(K),XQ(e)
- Q(e);N_PINB(I),OGATE,XS(B)::QAR1(G),XQ(e)
- Q(e);N_PINB(I)::R(K)+B(I),DCHECK
- Q(e);N_PINB(I)::B(I)
- Refutation
- Q(e);XP(H)
- Try
- Q(G);
- Threat
- DUALS(5)
- Refutation
- P(c);XQ(G)
- Try
- Q(G);
- Threat
- QAB1(G)
- Refutation
- S(f);XQ(G)
- Try
- Q(G);
- Threat
- QAB1(G)
- Vars
- Q(e);CHECK,OGATE,P_SPINQ(e),XB(I)::R(K),XQ(e)
- Refutation
- S(f);
- Try
- Actual
- Q(G);
- Threat
- QAR(G)
- Vars
- Q(e);CHECK,OGATE,P_SPINQ(e),XB(I)::R(K),XQ(e)
- Q(e);N_PINB(I),XQ(G)::R(K)+B(I),DCHECK
- Q(e);N_PINB(I),P_PINP(F),P_SPINQ(e),XS(C)::R(K)+B(I)
- Q(e);N_PINB(I),P_SPINQ(e),XS(B)::R(K)+B(I)
- B(a);OGATE,P_SPINB(a),XS(B)::QAB(G)
- Q(e);N_PINB(I)::B(I)
- B(a);OGATE::QAB(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).