MESON Chess Problem Database
Problem Display
PID: 141922 (BB6/r1q1R1p1/3rn1p1/6R1/1N3kPK/5P2/5Q1P/b7 w - - 0 1)
Peralta, Louis
Phenix, 1989
#2
10 + 8
SOLUTION
- SOUND
- Sets
- 1...Qa5
- 2.Sd3#
- 2.Qd2#
- 1...Qb6
- 2.Sd3#
- 2.Sd5#
- 1...Qd8
- 2.Sd3#
- 2.Sd5#
- 2.Qd2#
- 1...Qc1
- 2.Sd3#
- 2.Sd5#
- 1...Qc2
- 2.Sd5#
- 1...Qc3
- 2.Sd5#
- 1...Qc4
- 2.Qd2#
- 1...Qc5
- 2.Sd3#
- 1...Qc6
- 2.Sd3#
- 1...Qb7
- 2.Sd3#
- 1...Qd7
- 2.Sd3#
- 2.Sd5#
- 2.Qd2#
- 1...Qxe7
- 2.Sd3#
- 2.Sd5#
- 2.Qd2#
- 1...Qc8
- 2.Sd3#
- 2.Sd5#
- 2.Qd2#
- 1...Rd2
- 2.Qxd2#
- 1...Rd3
- 2.Sxd3#
- 1...Rd4
- 2.Rf7#
- 1...Rd5
- 2.Sxd5#
- 1...Rda6
- 2.Sd3#
- 2.Sd5#
- 2.Qd2#
- 1...Rb6
- 2.Sd3#
- 2.Sd5#
- 2.Qd2#
- 1...Rc6
- 2.Sd3#
- 2.Sd5#
- 1...Bd4
- 2.Sd3#
- 1...Sd4
- 2.Sd3#
- 2.Re4#
- 2.Qe3#
- 2.Qg3#
- 2.Qd2#
- 1...Sc5
- 2.Qe3#
- 2.Qg3#
- 1...Sxg5
- 2.Qe3#
- 2.Qg3#
- 1...Sd8
- 2.Re4#
- 2.Qe3#
- 2.Qg3#
- 1...Sf8
- 2.Re4#
- 2.Qe3#
- 2.Qg3#
- 1...Qa5
- Tries
- 1.Sc2?
- threat
- 2.Qe3#
- 2.Qg3#
- 1...Qb6
- 2.Qg3#
- 1...Qc3
- 2.Qg3#
- 1...Qc5
- 2.Qg3#
- 1...Rd3
- 2.Qg3#
- 1...Ra3
- 2.Qg3#
- 1...Bd4
- 2.Qg3#
- 1...Qxc2!
- threat
- 1.Rxe6?
- threat
- 2.Re4#
- 2.Qe3#
- 2.Qg3#
- 1...Rxe6
- 2.Sd3#
- 2.Sd5#
- 1...Qb6
- 2.Sd3#
- 2.Sd5#
- 2.Re4#
- 2.Qg3#
- 1...Qc1
- 2.Sd3#
- 2.Sd5#
- 2.Re4#
- 2.Qg3#
- 1...Qc2
- 2.Sd5#
- 2.Qe3#
- 2.Qg3#
- 1...Qc3
- 2.Sd5#
- 2.Re4#
- 2.Qg3#
- 1...Qc4
- 2.Qe3#
- 2.Qg3#
- 2.Qd2#
- 1...Qc5
- 2.Sd3#
- 2.Re4#
- 2.Qg3#
- 1...Qc6
- 2.Sd3#
- 2.Qe3#
- 2.Qg3#
- 1...Qb7
- 2.Sd3#
- 2.Qe3#
- 2.Qg3#
- 1...Qe7
- 2.Sd3#
- 2.Sd5#
- 2.Qe3#
- 2.Qg3#
- 2.Qd2#
- 1...Rd3
- 2.Sxd3#
- 2.Re4#
- 2.Qg3#
- 1...Rd4
- 2.Qe3#
- 2.Qg3#
- 1...Ra3
- 2.Re4#
- 2.Qg3#
- 1...Bd4
- 2.Sd3#
- 2.Re4#
- 2.Qg3#
- 1...Be5!
- threat
- 1.Rf7+?
- 1...Qxf7
- 2.Sd3#
- 2.Sd5#
- 2.Qd2#
- 1...Bf6!
- 1...Qxf7
- 1.Sc2?
- Keys
- 1.Qe2!
- threat
- 2.Qe4#
- 1...Sxg5
- 2.Qe3#
- 1...Qc2
- 2.Sd5#
- 1...Qc4
- 2.Qd2#
- 1...Qc6
- 2.Sd3#
- 1...Qb7
- 2.Sd3#
- 1...Rd4
- 2.Rf7#
- 1...Sc5
- 2.Qe3#
- threat
- 1.Qe2!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 0
- ADDED MATES = 2
- REMOVED MATES = 6
- Sets
- Q(g);P_SPINR(c)::S(D)
- Q(g);P_SPINR(c)::QAB(A)
- R(c);N_GUARD,P_SPINQ(g)::QAB(A),XR(c)
- R(c);N_GUARD,P_SPINQ(g)::S(D),XR(c)
- R(c);P_SPINQ(g),S_CUTB(a)::R(H)
- B(a);S_CUTR(c)::S(D)
- Tries
- Try
- S(D);
- Threat
- DUALS(2)
- Vars
- Q(g);P_SPINR(c)::QAB1(A)
- R(c);P_SPINQ(g)::QAB1(A)
- R(f);::QAB1(A)
- B(a);::QAB1(A)
- Refutation
- Q(g);P_SPINR(c),XS(D)
- Try
- R(H);XS(d)
- Threat
- DUALS(3)
- Refutation
- B(a);
- Try
- R(H);CHECK
- Refutation
- B(a);P_PINR(G),P_SPINB(a)
- Try
- Actual
- Q(A);
- Threat
- QAR1(A)
- Vars
- S(d);XR(G)::QAB1(A)
- Q(g);P_SPINR(c)::S(D)
- Q(g);P_SPINR(c)::QAB(A)
- R(c);P_SPINQ(g),S_CUTB(a)::R(H)
- S(d);::QAB1(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).