MESON Chess Problem Database
Problem Display
PID: 234892 (1b3N2/1K1Pr2n/6Q1/4k2N/7p/B3P3/rP6/1b3R1B w - - 0 1)
Haring, Jacobus
Revista Romana de Sah, 1957
#2
10 + 7
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Rxb2+
- 2.Bxb2#
- 1...Re6
- 2.Qxe6#
- 1...Rxd7+
- 2.Sxd7#
- 1...Rf7
- 2.Qe6#
- 1...Rg7
- 2.Qe6#
- 1...Re8
- 2.Qxe8#
- 2.dxe8Q#
- 2.dxe8R#
- 1...Be4+
- 2.Qxe4#
- 1...Bf5
- 2.Rxf5#
- 2.Qxf5#
- 1...Bd6
- 2.Bxd6#
- 2.Qxd6#
- 1...Ba7
- 2.Bd6#
- 2.Qd6#
- 1...Sg5
- 2.Qf6#
- 1...Sf6
- 2.Qxf6#
- 1...Sxf8
- 2.Qf6#
- 1...h3
- 2.Qg3#
- 1...Rxb2+
- Tries
- 1.Sf6?
- threat
- 2.Sg4#
- 1...Rxd7+
- 2.S6xd7#
- 1...Be4+
- 2.Qxe4#
- 1...Sxf6
- 2.Qxf6#
- 1...Bf5
- 2.Rxf5#
- 2.Qxf5#
- 1...Rxb2+!
- threat
- 1.Rxb1?
- threat
- 2.Qe4#
- 1...Rxb2+
- 2.Bxb2#
- 1...Rxd7+
- 2.Sxd7#
- 1...Sg5
- 2.Qxg5#
- 2.Qf6#
- 1...Sf6
- 2.Qg5#
- 2.Qxf6#
- 1...Rxa3!
- threat
- 1.Rd1?
- threat
- 2.Rd5#
- 1...Rxb2+
- 2.Bxb2#
- 1...Rxd7+
- 2.Sxd7#
- 1...Be4+
- 2.Qxe4#
- 1...Sf6
- 2.Qxf6#
- 1...Bd3!
- threat
- 1.Rf7?
- threat
- 2.Rxe7#
- 1...Rxb2+
- 2.Bxb2#
- 1...Rxd7+
- 2.Sxd7#
- 1...Be4+
- 2.Qxe4#
- 1...Rxf7
- 2.Qe6#
- 1...Sxf8
- 2.Qf6#
- 1...Re6
- 2.Qxe6#
- 1...Re8
- 2.dxe8Q#
- 2.dxe8R#
- 1...Bf5
- 2.Rxf5#
- 2.Qxf5#
- 1...Bd6
- 2.Bxd6#
- 2.Qxd6#
- 1...Sg5
- 2.Qf6#
- 2.Qg7#
- 1...Bxg6!
- threat
- 1.Qg2?
- threat
- 2.Qd5#
- 2.Qh2#
- 1...Rxb2+
- 2.Qxb2#
- 1...Be4+
- 2.Qxe4#
- 1...Sxf8
- 2.Qd5#
- 1...Rf7
- 2.Qd5#
- 1...Rg7
- 2.Qd5#
- 1...Sf6
- 2.Qh2#
- 1...Rxd7+!
- threat
- 1.Qg5+?
- 1...Bf5
- 2.Rxf5#
- 2.Qf4#
- 2.Qxf5#
- 1...Sxg5!
- 1...Bf5
- 1.Qb6?
- threat
- 2.Qd4#
- 2.Qa5#
- 2.Qc5#
- 2.Qb5#
- 1...Rxd7+
- 2.Sxd7#
- 1...Rxb2
- 2.Bxb2#
- 2.Qxb2#
- 1...Rxa3
- 2.Qd4#
- 2.Qc5#
- 1...Sxf8
- 2.Qf6#
- 1...Bd3
- 2.Qd4#
- 2.Qc5#
- 1...Bd6
- 2.Bxd6#
- 2.Qd4#
- 2.Qxd6#
- 1...Ba7
- 2.Bd6#
- 2.Qc7#
- 2.Qd6#
- 1...Bc7
- 2.Qd4#
- 2.Qc5#
- 2.Qxc7#
- 2.Qb5#
- 1...Sf6
- 2.Qd4#
- 2.Qxf6#
- 1...Be4+!
- threat
- 1.Qh6?
- threat
- 2.Qf4#
- 1...Rxb2+
- 2.Bxb2#
- 1...Rxd7+
- 2.Sxd7#
- 1...Sxf8
- 2.Qf6#
- 1...Rf7
- 2.Qe6#
- 1...Sg5
- 2.Qf6#
- 1...Be4+!
- threat
- 1.Qg7+?
- 1...Sf6
- 2.Qxf6#
- 2.Qxe7#
- 1...Rxg7!
- 1...Sf6
- 1.Sf6?
- Keys
- 1.Qc6!
- threat
- 2.Qb5#
- 2.Qd5#
- 2.Qc3#
- 2.Qc5#
- 1...Rxb2+
- 2.Bxb2#
- 1...Rxd7+
- 2.Sxd7#
- 1...Rxa3
- 2.Qd5#
- 2.Qc5#
- 1...Sxf8
- 2.Qd5#
- 2.Qf6#
- 1...Bd3
- 2.Qd5#
- 2.Qc3#
- 2.Qc5#
- 1...Be4
- 2.Qxe4#
- 1...Bd6
- 2.Bxd6#
- 2.Qd5#
- 2.Qc3#
- 2.Qxd6#
- 1...Ba7
- 2.Bd6#
- 2.Qd5#
- 2.Qd6#
- 2.Qc7#
- 1...Sf6
- 2.Qc3#
- 2.Qxf6#
- threat
- 1.Qc6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 0
- REMOVED MATES = 7
- Sets
- R(b);CHECK,OGATE,XP(C)::B(D),XR(b)
- R(e);N_GUARD,N_PINP(I)::QAR1(G),XR(e)
- R(e);CHECK,XP(I)::S(J),XR(e)
- R(e);N_GUARD::QAR1(G)
- B(a);CHECK,N_GUARD::QAR1(G),XB(a)
- S(f);N_GUARD::QAB1(G)
- S(f);N_GUARD::QAB1(G),XS(f)
- S(f);N_GUARD,XS(J)::QAB1(G)
- P(c);N_GUARD::QAB(G)
- Tries
- Try
- S(F);
- Threat
- S(F)
- Vars
- R(e);CHECK,XP(I)::S(F),XR(e)
- B(a);CHECK,N_GUARD::QAR1(G),XB(a)
- S(f);OGATE,XS(F)::QAB1(G),XS(f)
- Refutation
- R(b);CHECK,XP(C)
- Try
- R(A);XB(a)
- Threat
- QAR1(G)
- Vars
- R(b);CHECK,OGATE,XP(C)::B(D),XR(b)
- R(e);CHECK,XP(I)::S(J),XR(e)
- Refutation
- R(b);XB(D)
- Try
- R(A);
- Threat
- R1(A)
- Vars
- R(b);CHECK,OGATE,XP(C)::B(D),XR(b)
- R(e);CHECK,XP(I)::S(J),XR(e)
- B(a);CHECK,N_GUARD::QAR1(G),XB(a)
- S(f);N_GUARD::QAB1(G),XS(f)
- Refutation
- B(a);
- Try
- R(A);
- Threat
- R(A),XR(e)
- Vars
- R(b);CHECK,OGATE,XP(C)::B(D),XR(b)
- R(e);CHECK,XP(I)::S(J),XR(e)
- B(a);CHECK,N_GUARD::QAR1(G),XB(a)
- R(e);N_GUARD,XR(A)::QAR1(G)
- S(f);N_GUARD,XS(J)::QAB1(G)
- R(e);N_GUARD,N_PINP(I)::QAR1(G),XR(e)
- R(e);N_PINP(I)::PXR(e)=Q
- Refutation
- B(a);XQ(G)
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- R(b);CHECK,OGATE,XP(C)::QAB(G),XR(b)
- B(a);CHECK,N_GUARD::QAR1(G),XB(a)
- S(f);XS(J)::QAR1(G)
- R(e);::QAR1(G)
- S(f);::QAB(G)
- Refutation
- R(e);CHECK,XP(I)
- Try
- Q(G);CHECK
- Refutation
- S(f);XQ(G)
- Try
- Q(G);
- Threat
- DUALS(4)
- Vars
- R(e);CHECK,XP(I)::S(J),XR(e)
- S(f);N_GUARD,XS(J)::QAB1(G)
- Refutation
- B(a);CHECK
- Try
- Q(G);
- Threat
- QAB1(G)
- Vars
- R(b);CHECK,OGATE,XP(C)::B(D),XR(b)
- R(e);CHECK,XP(I)::S(J),XR(e)
- S(f);N_GUARD,XS(J)::QAB1(G)
- R(e);N_GUARD::QAR1(G)
- S(f);N_GUARD::QAB1(G)
- Refutation
- B(a);CHECK
- Try
- Q(G);CHECK
- Refutation
- R(e);XQ(G)
- Try
- Actual
- Q(G);
- Threat
- DUALS(4)
- Vars
- R(b);CHECK,OGATE,XP(C)::B(D),XR(b)
- R(e);CHECK,XP(I)::S(J),XR(e)
- B(a);N_GUARD,P_PINQ(G)::QAR1(G),XB(a)
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).