MESON Chess Problem Database
Problem Display
PID: 16756 (B1n1R1R1/B3qp2/1r5p/4P3/4PkP1/2Pp1N1K/5Q2/8 w - - 0 1)
Valve, Leo Erland
1st Prize, El Ajedrez Espanol, 1943
#2
11 + 7
SOLUTION
- SOUND
- Sets
- 1...Qa3
- 2.Se1#
- 2.Sg1#
- 2.Sd2#
- 2.Sh2#
- 2.Sd4#
- 2.Sh4#
- 2.Sg5#
- 1...Qb4
- 2.Se1#
- 2.Sg1#
- 2.Sd2#
- 2.Sh2#
- 2.Sd4#
- 2.Sh4#
- 2.Sg5#
- 1...Qh4+
- 2.Sxh4#
- 1...Qc5
- 2.Sd4#
- 1...Qg5
- 2.Se1#
- 2.Sg1#
- 2.Sd2#
- 2.Sh2#
- 2.Sd4#
- 2.Sh4#
- 2.Sxg5#
- 1...Qd6
- 2.Se1#
- 2.Sg1#
- 2.Sd2#
- 2.Sh2#
- 2.Sd4#
- 2.Sh4#
- 2.Sg5#
- 1...Qf6
- 2.Se1#
- 2.Sg1#
- 2.Sd2#
- 2.Sh2#
- 2.Sd4#
- 2.Sh4#
- 2.Sg5#
- 1...Qd8
- 2.Se1#
- 2.Sg1#
- 2.Sd2#
- 2.Sh2#
- 2.Sd4#
- 2.Sh4#
- 2.Sg5#
- 1...Qf8
- 2.Se1#
- 2.Sg1#
- 2.Sd2#
- 2.Sh2#
- 2.Sd4#
- 2.Sh4#
- 2.Sg5#
- 1...Qxe5
- 2.Se1#
- 2.Sg1#
- 2.Sd2#
- 2.Sh2#
- 2.Sd4#
- 2.Sh4#
- 2.Sxe5#
- 2.Sg5#
- 1...Qxa7
- 2.Se1#
- 2.Sg1#
- 2.Sd2#
- 2.Sh2#
- 2.Sd4#
- 2.Sh4#
- 2.Sg5#
- 1...Qb7
- 2.Sd2#
- 2.Sg5#
- 1...Qc7
- 2.Se1#
- 2.Sg1#
- 2.Sd2#
- 2.Sh2#
- 2.Sd4#
- 2.Sh4#
- 2.Sg5#
- 1...Qd7
- 2.Se1#
- 2.Sg1#
- 2.Sd2#
- 2.Sh2#
- 2.Sd4#
- 2.Sh4#
- 2.Sg5#
- 1...Rb1
- 2.Be3#
- 2.Qe3#
- 2.Qg3#
- 1...Rb2
- 2.Be3#
- 2.Qe3#
- 2.Qg3#
- 1...Rb3
- 2.Be3#
- 2.Qe3#
- 2.Qg3#
- 1...Rb4
- 2.Be3#
- 2.Qe3#
- 2.Qg3#
- 1...Rb5
- 2.Be3#
- 2.Qe3#
- 2.Qg3#
- 1...Ra6
- 2.Be3#
- 2.Qe3#
- 2.Qg3#
- 1...Rc6
- 2.Qe3#
- 1...Rd6
- 2.Be3#
- 2.Qe3#
- 2.Qg3#
- 1...Re6
- 2.Be3#
- 2.Qe3#
- 2.Qg3#
- 1...Rf6
- 2.Be3#
- 2.Qe3#
- 2.Qg3#
- 1...Rg6
- 2.Be3#
- 2.Qe3#
- 2.Qg3#
- 1...Rb7
- 2.Qe3#
- 1...Rb8
- 2.Be3#
- 2.Qe3#
- 2.Qg3#
- 1...Qa3
- Tries
- 1.Bxb6?
- threat
- 2.Be3#
- 2.Qe3#
- 2.Qg3#
- 1...Qh4+
- 2.Sxh4#
- 1...Qb7
- 2.Sd2#
- 2.Sg5#
- 2.Qe3#
- 1...Qc5
- 2.Sd4#
- 1...Qa7
- 2.Se1#
- 2.Sg1#
- 2.Sd2#
- 2.Sh2#
- 2.Sd4#
- 2.Sh4#
- 2.Sg5#
- 2.Qe3#
- 2.Qg3#
- 1...Sxb6!
- threat
- 1.Rxe7?
- threat
- 2.Se1#
- 2.Sg1#
- 2.Sd2#
- 2.Sh2#
- 2.Sd4#
- 2.Sh4#
- 2.Sg5#
- 1...Rc6
- 2.Sd2#
- 2.Sg5#
- 2.Qe3#
- 1...Rb7
- 2.Sd2#
- 2.Sg5#
- 2.Qe3#
- 1...Rb2
- 2.Sd2#
- 2.Be3#
- 2.Rxf7#
- 2.Qe3#
- 2.Qg3#
- 1...Re6
- 2.Be3#
- 2.Qe3#
- 2.Qg3#
- 1...Rg6
- 2.Be3#
- 2.Qe3#
- 2.Qg3#
- 1...d2
- 2.Se1#
- 2.Sg1#
- 2.Sxd2#
- 2.Sh2#
- 2.Sd4#
- 2.Sh4#
- 2.Sg5#
- 1...Sxe7!
- threat
- 1.Bxb6?
- Keys
- 1.Kg2!
- threat
- 2.Qd2#
- 1...Qg5
- 2.Sh2#
- 1...Qb7
- 2.Sd2#
- 1...Rc6
- 2.Qe3#
- 1...Rg6
- 2.Qg3#
- 1...Rb7
- 2.Qe3#
- 1...Qc5
- 2.Sd4#
- 1...Rb2
- 2.Be3#
- 1...d2
- 2.Qxd2#
- threat
- 1.Kg2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 5
- REMOVED MATES = 1
- Sets
- Q(e);CHECK::QAR(A)+S(C),XQ(e)
- Q(e);::QAR(A)+S(C)
- R(c);::QAB1(A)
- Tries
- Try
- B(H);XR(c)
- Threat
- DUALS(3)
- Vars
- Q(e);CHECK::QAR(A)+S(C),XQ(e)
- Q(e);::QAR(A)+S(C)
- Refutation
- S(g);XB(H)
- Try
- R(J);XQ(e)
- Threat
- DUALS(7)
- Refutation
- S(g);XR(J)
- Try
- Actual
- K(D);S_FLIGHT
- Threat
- QAB(A)
- Vars
- Q(e);P_PINP(F)::QAR(A)+S(C)
- Q(e);::QAR(A)+S(C)
- R(c);::QAB1(A)
- R(c);P_PINP(F)::QAB1(A)
- R(c);OGATE,P_PINQ(A)::B(H)
- P(a);::QAB(A),XP(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).