MESON Chess Problem Database
Problem Display
PID: 234886 (7Q/4N3/3P1K2/4r1N1/3k2B1/2R5/1P1P4/8 w - - 0 1)
Haring, Jacobus
Revista Romana de Sah, 1956
#2
9 + 2
| 15148 | Sadier Collection | 2021 |
SOLUTION
- SOUND
- Sets
- 1...Re3
- 2.dxe3#
- 1...Re4
- 2.Sf3#
- 1...Rd5
- 2.Sc6#
- 1...Rf5+
- 2.Kxf5#
- 1...Re6+
- 2.Kxe6#
- 1...Re3
- Tries
- 1.Se6+?
- 1...Ke4
- 2.Bf3#
- 2.Re3#
- 2.Qh1#
- 1...Rxe6+!
- 1...Ke4
- 1.Sf5+?
- 1...Kd5
- 2.Qa8#
- 1...Rxf5+!
- 1...Kd5
- 1.Bf3?
- threat
- 2.Sc6#
- 1...Rf5+
- 2.Kxf5#
- 2.Sxf5#
- 1...Re6+
- 2.Kxe6#
- 2.Sxe6#
- 1...Rxe7
- 2.Kxe7#
- 1...Rc5
- 2.Se6#
- 2.Qh4#
- 1...Re4!
- threat
- 1.Bf5?
- threat
- 2.Sf3#
- 1...Rxf5+
- 2.Kxf5#
- 1...Re6+
- 2.Kxe6#
- 2.Sxe6#
- 1...Re3
- 2.dxe3#
- 1...Rxe7!
- threat
- 1.Be6?
- threat
- 2.Sc6#
- 1...Rf5+
- 2.Kxf5#
- 2.Sxf5#
- 1...Rxe6+
- 2.Kxe6#
- 1...Rc5
- 2.Qh4#
- 1...Rxg5!
- threat
- 1.Qh1?
- threat
- 2.Sc6#
- 1...Rf5+
- 2.Sxf5#
- 1...Re6+
- 2.Sxe6#
- 1...Re4
- 2.Sf3#
- 2.Qxe4#
- 1...Rc5
- 2.Se6#
- 2.Qe4#
- 2.Qg1#
- 1...Rxe7!
- threat
- 1.Qh4?
- 1...Rf5+
- 2.Bxf5#
- 1...Re6+
- 2.Bxe6#
- 1...Rxe7
- 2.Be6#
- 1...Re1
- 2.Be2#
- 1...Re2
- 2.Bxe2#
- 1...Re3
- 2.dxe3#
- 1...Re4
- 2.Sf3#
- 1...Ra5
- 2.Bd1#
- 2.Be2#
- 2.Bf3#
- 2.Bh3#
- 2.Bf5#
- 2.Bh5#
- 2.Be6#
- 2.Bd7#
- 2.Bc8#
- 2.Qf2#
- 1...Rb5
- 2.Bd1#
- 2.Be2#
- 2.Bf3#
- 2.Bh3#
- 2.Bf5#
- 2.Bh5#
- 2.Be6#
- 2.Bd7#
- 2.Bc8#
- 2.Qf2#
- 1...Rc5
- 2.Bd1#
- 2.Be2#
- 2.Bf3#
- 2.Bh3#
- 2.Bf5#
- 2.Bh5#
- 2.Be6#
- 2.Bd7#
- 2.Bc8#
- 2.Qf2#
- 1...Rd5
- 2.Sc6#
- 2.Bd1#
- 2.Be2#
- 2.Bf3#
- 2.Bh3#
- 2.Bf5#
- 2.Bh5#
- 2.Be6#
- 2.Bd7#
- 2.Bc8#
- 2.Qf2#
- 1...Rxg5!
- 1...Rf5+
- 1.Qh7?
- threat
- 2.Sf3#
- 2.Qd3#
- 1...Re6+
- 2.Sxe6#
- 1...Rxg5
- 2.Qd3#
- 1...Rxe7
- 2.Qd3#
- 1...Re3
- 2.dxe3#
- 1...Re4
- 2.Sf3#
- 2.Qxe4#
- 1...Rf5+!
- threat
- 1.Se6+?
- Keys
- 1.Qa8!
- threat
- 2.Sf3#
- 2.Qa4#
- 1...Rf5+
- 2.Sxf5#
- 1...Re6+
- 2.Sxe6#
- 1...Rxg5
- 2.Qa4#
- 1...Rxe7
- 2.Sf3#
- 1...Re3
- 2.Sf5#
- 2.Qd5#
- 2.Qa4#
- 2.Qa7#
- 2.dxe3#
- 1...Ra5
- 2.Sf3#
- 2.Se6#
- 2.Qe4#
- 1...Rb5
- 2.Sf3#
- 2.Se6#
- 2.Qe4#
- 1...Rc5
- 2.Sf3#
- 2.Se6#
- 2.Qe4#
- 1...Rd5
- 2.Sc6#
- 2.Qxd5#
- 2.Qa4#
- threat
- 1.Qa8!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 2
- ADDED MATES = 2
- REMOVED MATES = 3
- Sets
- R(b);OGATE::P(B),XR(b)
- R(b);SBLOCK::S(E)
- R(b);SBLOCK::S(H)
- R(b);CHECK::QAB(I)+K(G),XR(b)
- Tries
- Try
- S(E);CHECK
- Refutation
- R(b);CHECK,XS(E)
- Try
- S(H);CHECK
- Vars
- K(a);P-FLIGHT::QAB(I)
- Refutation
- R(b);CHECK,XS(H)
- Try
- B(D);
- Threat
- S(H)
- Vars
- R(b);XS(H)::QAB(I)+K(G),XR(b)
- Refutation
- R(b);
- Try
- B(D);
- Threat
- S(E)
- Vars
- R(b);CHECK,XB(D)::QAB(I)+K(G),XR(b)
- R(b);OGATE::P(B),XR(b)
- Refutation
- R(b);XS(H)
- Try
- B(D);
- Threat
- S(H)
- Vars
- R(b);CHECK,XB(D)::QAB(I)+K(G),XR(b)
- R(b);N_GUARD::QAR(I)
- Refutation
- R(b);XS(E)
- Try
- Q(I);
- Threat
- S(H)
- Vars
- R(b);CHECK,N_GUARD::S(H),XR(b)
- R(b);CHECK,N_GUARD::S(E),XR(b)
- Refutation
- R(b);XS(H)
- Try
- Q(I);
- Vars
- R(b);CHECK,N_GUARD::QAR(I)+B(D),XR(b)
- R(b);N_GUARD,XS(H)::QAR(I)+B(D)
- R(b);N_GUARD::QAR(I)+B(D)
- R(b);N_GUARD::QAR(I)+B(D),XR(b)
- R(b);OGATE::P(B),XR(b)
- R(b);SBLOCK::S(E)
- Refutation
- R(b);XS(E)
- Try
- Q(I);
- Threat
- DUALS(2)
- Vars
- R(b);CHECK,N_GUARD::S(E),XR(b)
- R(b);XS(E)::QAR1(I)
- R(b);XS(H)::QAR1(I)
- R(b);OGATE::P(B),XR(b)
- Refutation
- R(b);CHECK
- Try
- Actual
- Q(I);
- Threat
- DUALS(2)
- Vars
- R(b);CHECK,N_GUARD::S(H),XR(b)
- R(b);CHECK,N_GUARD::S(E),XR(b)
- R(b);XS(E)::QAR(I)
- R(b);XS(H)::S(E)
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).