MESON Chess Problem Database

Problem Display
PID: 7281 (3R4/6B1/2P2Qp1/5np1/2p1BkP1/K1N1N1r1/2P2pRP/5n2 w - - 0 1)

Subotic, Miroslav

3rd Comm., Netanya (Internet), 1999

3R4/6B1/2P2Qp1/5np1/2p1BkP1/K1N1N1r1/2P2pRP/5n2

#2

12 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe3
      • 2.Qxg5#
    • 1...Rxe3
      • 2.Qe5#
    • 1...Rf3
      • 2.Sed5#
    • 1...Rh3
      • 2.Sed5#
    • 1...Rxg4
      • 2.Sed5#
  • Tries
    • 1.Bh6?
      • threat
        • 2.Bxg5#
      • 1...Kxe3
        • 2.Bxg5#
        • 2.Qxg5#
      • 1...Rxg4
        • 2.Sed5#
      • 1...Sxe3!
    • 1.Rxf2+?
      • 1...Rf3
        • 2.Rxf3#
      • 1...Kxe3!
    • 1.Rxg3?
      • threat
        • 2.Sg2#
        • 2.Sed5#
        • 2.Rf3#
        • 2.Qe5#
      • 1...Sxh2
        • 2.Qe5#
      • 1...Sxe3
        • 2.Qe5#
      • 1...Sd2
        • 2.Sg2#
        • 2.Sed5#
        • 2.Qe5#
      • 1...Sxg3!
    • 1.Re8?
      • threat
        • 2.Scd5#
      • 1...Kxe3
        • 2.Qxg5#
      • 1...Rxe3
        • 2.Qe5#
      • 1...Sxe3!
    • 1.Qxf5+?
      • 1...Kxe3
        • 2.Qxf2#
        • 2.Qxg5#
      • 1...gxf5!
    • 1.hxg3+?
      • 1...Kxe3
        • 2.Qxg5#
      • 1...Sxg3!
    • 1.h3?
      • threat
        • 2.Sed5#
      • 1...Kxe3
        • 2.Qxg5#
      • 1...Rxe3
        • 2.Qe5#
      • 1...Sxe3
        • 2.Qe5#
      • 1...Rxg2!
  • Keys
    • 1.Rd4!
      • threat
        • 2.Scd5#
      • 1...Kxe3
        • 2.Qxg5#
      • 1...Rxe3
        • 2.Qe5#
      • 1...Sxe3
        • 2.Bd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • K(e);N_SPINS(f),S_FLIGHT,XS(F)::QAB(J),XP(g)
    • R(c);P_PINS(E),SBLOCK,XS(F)::QAB1(J)
    • R(c);::S(F)
    • R(c);XP(H)::S(F)
  • Tries
    • Try
      • B(K);P_PINP(g)
      • Threat
        • B(K),XP(g)
      • Vars
        • R(c);XP(H)::S(F)
      • Refutation
        • S(a);XS(F)
    • Try
      • R(B);CHECK,XP(b)
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::R1(B),XR(c)
      • Refutation
        • K(e);N_SPINS(f),S_FLIGHT,XS(F)
    • Try
      • R(B);XR(c)
      • Threat
        • DUALS(4)
      • Vars
        • S(a);XP(C)::QAB1(J)
        • S(a);XS(F)::QAB1(J)
      • Refutation
        • S(a);XR(B)
    • Try
      • R(L);
      • Threat
        • S(E)
      • Vars
        • K(e);N_SPINS(f),S_FLIGHT,XS(F)::QAB(J),XP(g)
        • R(c);P_PINS(E),SBLOCK,XS(F)::QAB1(J)
      • Refutation
        • S(a);XS(F)
    • Try
      • Q(J);CHECK,XS(f)
      • Refutation
        • P(h);XQ(J)
    • Try
      • P(C);CHECK,XR(c)
      • Vars
        • K(e);N_SPINS(f),S_FLIGHT,XS(F)::QAB(J),XP(g)
      • Refutation
        • S(a);XP(C)
    • Try
      • P(C);
      • Threat
        • S(F)
      • Vars
        • K(e);N_SPINS(f),S_FLIGHT,XS(F)::QAB(J),XP(g)
        • R(c);P_PINS(E),SBLOCK,XS(F)::QAB1(J)
        • S(a);SBLOCK,XS(F)::QAB1(J)
      • Refutation
        • R(c);XR(B)
  • Actual
    • R(L);
    • Threat
      • S(E)
    • Vars
      • K(e);N_SPINS(f),S_FLIGHT,XS(F)::QAB(J),XP(g)
      • R(c);P_PINS(E),SBLOCK,XS(F)::QAB1(J)
      • S(a);SBLOCK,XS(F)::R(L)+B(G)
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).