MESON Chess Problem Database

Problem Display
PID: 108555 (8/3p1p2/2PN1K2/1RPkN1R1/rP6/1nP2ppQ/8/4r3 w - - 0 1)

Kapros, Jorge Marcelo

Boletim da UBP, 1984

8/3p1p2/2PN1K2/1RPkN1R1/rP6/1nP2ppQ/8/4r3

#2

10 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sd4
      • 2.c4#
  • Tries
    • 1.Sg6+?
      • 1...Re5
        • 2.Se7#
      • 1...Kxc6!
    • 1.Qg4?
      • threat
        • 2.Qc4#
        • 2.c4#
      • 1...Rxe5
        • 2.Qxf3#
        • 2.Qe4#
      • 1...Sxc5
        • 2.Qd4#
      • 1...Rc1
        • 2.Qxf3#
        • 2.Qc4#
        • 2.Qe4#
      • 1...Re4
        • 2.Qxe4#
      • 1...Sd2
        • 2.Qd4#
      • 1...Sd4
        • 2.Qxd4#
        • 2.c4#
      • 1...Sa5
        • 2.Qd4#
      • 1...Rxb4!
    • 1.Qxd7?
      • threat
        • 2.Qxf7#
      • 1...Rxe5
        • 2.Rxe5#
      • 1...Sxc5
        • 2.Rxc5#
      • 1...Sd4
        • 2.c4#
      • 1...Ra7!
    • 1.Qh4?
      • threat
        • 2.Qc4#
        • 2.c4#
      • 1...Rxe5
        • 2.Qe4#
      • 1...Sxc5
        • 2.Qd4#
      • 1...Rc1
        • 2.Qc4#
        • 2.Qe4#
      • 1...Re4
        • 2.Qxe4#
      • 1...Sd2
        • 2.Qd4#
      • 1...Sd4
        • 2.Qxd4#
        • 2.c4#
      • 1...Sa5
        • 2.Qd4#
      • 1...Rxb4!
    • 1.Qh5?
      • threat
        • 2.Qxf7#
      • 1...Rxe5
        • 2.Qxf3#
      • 1...Sd4
        • 2.c4#
      • 1...Sxc5!
  • Keys
    • 1.Qh7!
      • threat
        • 2.Qxf7#
      • 1...Rxe5
        • 2.Qe4#
      • 1...Sxc5
        • 2.Qd3#
      • 1...Sd4
        • 2.c4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(b);SBLOCK::P(A)
  • Tries
    • Try
      • S(F);CHECK
      • Vars
        • R(a);P_SPINR(a)::S(F)
      • Refutation
        • K(f);S_FLIGHT,XP(H)
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • S(b);N_GUARD,P_SPINS(b),XP(E)::QAR1(B)
        • R(a);N_GUARD::QAB1(B),XR(a)
        • S(b);N_GUARD::QAR1(B)
      • Refutation
        • R(e);XP(C)
    • Try
      • Q(B);XP(g)
      • Threat
        • QAB(B),XP(h)
      • Vars
        • R(a);OGATE,P_SPINR(a),XS(F)::R1(G),XR(a)
        • S(b);OGATE,P_SPINS(b),XP(E)::R1(D),XS(b)
        • S(b);SBLOCK::P(A)
      • Refutation
        • R(e);
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • R(a);N_GUARD,P_SPINR(a),XS(F)::QAB1(B)
        • S(b);N_GUARD,P_SPINS(b),XP(E)::QAR1(B)
        • R(a);N_GUARD::QAB1(B),XR(a)
        • S(b);N_GUARD::QAR1(B)
      • Refutation
        • R(e);XP(C)
    • Try
      • Q(B);
      • Threat
        • QAB(B),XP(h)
      • Vars
        • R(a);N_GUARD,P_SPINR(a),XS(F)::QAB(B),XP(c)
        • S(b);SBLOCK::P(A)
      • Refutation
        • S(b);P_SPINS(b),XP(E)
  • Actual
    • Q(B);
    • Threat
      • QAB(B),XP(h)
    • Vars
      • R(a);N_GUARD,P_SPINR(a),XS(F)::QAB1(B)
      • S(b);N_GUARD,P_SPINS(b),XP(E)::QAR2(B)
      • S(b);SBLOCK::P(A)
HTML5 logo

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).