MESON Chess Problem Database
Problem Display
PID: 264517 (7n/4p1pn/Q7/2p1k3/4NRp1/1r4p1/B3N3/3R2K1 w - - 0 1)
Salazar Lopez, Francisco
The Problemist, 1993
#2
7 + 9
SOLUTION
- SOUND
- Sets
- 1...Rb1
- 2.Qe6#
- 1...Rb2
- 2.Rd5#
- 2.Qe6#
- 1...Ra3
- 2.Rd5#
- 2.Qe6#
- 1...Rc3
- 2.Rd5#
- 2.Qe6#
- 1...Rd3
- 2.Qe6#
- 1...Re3
- 2.Rd5#
- 2.Qe6#
- 1...Rf3
- 2.Rd5#
- 2.Qe6#
- 1...Rb4
- 2.Rd5#
- 2.Qe6#
- 1...Rb5
- 2.Rd5#
- 2.Qe6#
- 1...Rb7
- 2.Rd5#
- 2.Qe6#
- 1...Rb8
- 2.Rd5#
- 2.Qe6#
- 1...e6
- 2.Qd6#
- 1...Rb1
- Tries
- 1.Sd2?
- threat
- 2.Sc4#
- 1...Kd5
- 2.Sf3#
- 1...Rc3
- 2.Qe6#
- 1...Rd3
- 2.Qe6#
- 1...Rb4
- 2.Qe6#
- 1...c4
- 2.Sxc4#
- 1...Rb6!
- threat
- 1.S4xg3?
- threat
- 2.Re4#
- 2.Rf5#
- 1...Rb6
- 2.Rf5#
- 1...Re3
- 2.Rd5#
- 2.Rf5#
- 2.Qe6#
- 1...Rf3
- 2.Rd5#
- 2.Re4#
- 2.Qe6#
- 1...Rb4
- 2.Rd5#
- 2.Rf5#
- 2.Qe6#
- 1...Sg5
- 2.Rf5#
- 1...Sf6
- 2.Rf5#
- 1...e6
- 2.Qd6#
- 1...g6
- 2.Re4#
- 1...Rxg3+!
- threat
- 1.Sxc5?
- threat
- 2.Sd7#
- 2.Qe6#
- 1...Rb6
- 2.Sd7#
- 2.Rd5#
- 1...Rd3
- 2.Sxd3#
- 2.Qe6#
- 1...Rb7
- 2.Sd3#
- 2.Rd5#
- 2.Qe6#
- 1...Sg5
- 2.Sd7#
- 1...Sf6
- 2.Qe6#
- 1...e6
- 2.Sd7#
- 2.Qd6#
- 2.Qxe6#
- 1...Sf8!
- threat
- 1.Bxb3?
- threat
- 2.Rd5#
- 2.Qa1#
- 2.Qe6#
- 1...Sg5
- 2.Rd5#
- 2.Qa1#
- 1...Sf6
- 2.Qa1#
- 2.Qe6#
- 1...Sf8
- 2.Rd5#
- 2.Qa1#
- 1...e6
- 2.Qa1#
- 2.Qd6#
- 2.Qxe6#
- 1...c4!
- threat
- 1.Rf5+?
- 1...Kxe4
- 2.Qe6#
- 1...Kxf5!
- 1...Kxe4
- 1.Qc4?
- threat
- 2.Qd5#
- 1...Rd3
- 2.Qe6#
- 1...e6
- 2.Qxc5#
- 1...Sf6!
- threat
- 1.Qb7?
- threat
- 2.Qd5#
- 2.Qxe7#
- 1...Ke6
- 2.Qd5#
- 1...Rb6
- 2.Qd5#
- 1...Rd3
- 2.Qxe7#
- 1...Sg5
- 2.Qd5#
- 1...Sf6
- 2.Qxe7#
- 1...Sf8
- 2.Qd5#
- 1...Sg6
- 2.Qd5#
- 1...e6
- 2.Qc7#
- 1...Rxb7!
- threat
- 1.Qc8?
- threat
- 2.Qf5#
- 1...e6
- 2.Qxc5#
- 2.Qc7#
- 1...g6!
- threat
- 1.Qc6?
- threat
- 2.Rd5#
- 2.Qd5#
- 1...Rb1
- 2.Qd5#
- 2.Qxc5#
- 2.Qe6#
- 2.Qc7#
- 1...Rd3
- 2.Qe6#
- 1...e6
- 2.Qxc5#
- 2.Qd6#
- 2.Qc7#
- 1...Sf6!
- threat
- 1.Sd2?
- Keys
- 1.Sd6!
- threat
- 2.Sc4#
- 1...Ke6
- 2.Sf7#
- 1...exd6
- 2.Qxd6#
- 1...Rb6
- 2.Rf5#
- 1...Rc3
- 2.Rf5#
- 1...Rd3
- 2.Rf5#
- 1...Rb4
- 2.Rf5#
- 1...c4
- 2.Sxc4#
- threat
- 1.Sd6!
FEATURES
- Static
- TYPE = THREAT
- CHANGED MATES = 1
- ADDED MATES = 6
- REMOVED MATES = 2
- Sets
- R(a);P_PINR(A)::QAR1(G)
- R(a);::QAR1(G)
- P(f);N_GUARD::QAB1(G)
- Tries
- Try
- S(E);
- Threat
- S(E)
- Vars
- K(e);P-FLIGHT,P_SPINR(a),S_CUTP(c)::R(A)+S(E)
- R(a);::QAR1(G)
- P(d);::S(E),XP(d)
- Refutation
- R(a);
- Try
- S(E);XP(b)
- Threat
- DUALS(2)
- Vars
- R(a);::R1(F)
- S(h);::R1(F)
- P(f);N_GUARD::QAB1(G)
- P(g);::R1(F)
- Refutation
- R(a);CHECK,XS(E)
- Try
- S(E);XP(d)
- Threat
- DUALS(2)
- Vars
- S(h);::S(E)
- S(h);::QAR1(G)
- Refutation
- S(h);
- Try
- B(C);XR(a)
- Threat
- DUALS(3)
- Refutation
- P(d);
- Try
- R(F);CHECK
- Vars
- K(e);N_GUARD,P-FLIGHT,XS(E)::QAR2(G)
- Refutation
- K(e);P-FLIGHT,XR(F)
- Try
- Q(G);
- Threat
- QAR1(G)
- Vars
- R(a);::QAR1(G)
- P(f);SBLOCK::QAR2(G),XP(d)
- Refutation
- S(h);
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- K(e);P-FLIGHT,P_SPINR(a)::QAB1(G)
- R(a);::QAR1(G)
- R(a);::QAR2(G),XP(f)
- S(h);::QAR1(G)
- S(h);::QAR2(G),XP(f)
- S(i);::QAR1(G)
- P(f);SBLOCK::QAB(G)
- Refutation
- R(a);XQ(G)
- Try
- Q(G);
- Threat
- QAR1(G)
- Refutation
- P(g);
- Try
- Q(G);
- Threat
- DUALS(2)
- Vars
- R(a);::QAR1(G)
- Refutation
- S(h);
- Try
- Actual
- S(E);
- Threat
- S(E)
- Vars
- K(e);P-FLIGHT,P_SPINR(a),S_CUTS(i)::QAR(G)+S(E)
- P(f);OGATE,XS(E)::QAB1(G),XP(f)
- R(a);::R1(F)
- P(d);::S(E),XP(d)
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).