MESON Chess Problem Database

Problem Display
PID: 51873 (1b1rn2Q/2B5/3r4/2p1n1p1/5k1N/R2B1P1P/KN3P2/8 w - - 0 1)

Stojnic, Mihailo

3rd Prize, Pat a Mat, 2001

1b1rn2Q/2B5/3r4/2p1n1p1/5k1N/R2B1P1P/KN3P2/8

#2

10 + 8

56 The Problemist 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd3
      • 2.Qxe5#
    • 1...Rd4
      • 2.Qxe5#
    • 1...Ra6
      • 2.Qxe5#
    • 1...Rb6
      • 2.Qxe5#
    • 1...Rc6
      • 2.Qxe5#
    • 1...Rg6
      • 2.Qxe5#
    • 1...Rh6
      • 2.Qxe5#
    • 1...R6d7
      • 2.Qxe5#
    • 1...Sxd3
      • 2.Sxd3#
    • 1...Sxf3
      • 2.Sg2#
      • 2.Sg6#
  • Tries
    • 1.Ra4+?
      • 1...Rd4
        • 2.Qxe5#
      • 1...Sc4
        • 2.Rxc4#
      • 1...c4!
    • 1.Qh5?
      • threat
        • 2.Sg2#
      • 1...Rxd3
        • 2.Qg4#
      • 1...Sxd3
        • 2.Sxd3#
      • 1...Sxf3
        • 2.Sg6#
      • 1...gxh4
        • 2.Qf5#
      • 1...Sc4
        • 2.Sg6#
      • 1...Sc6
        • 2.Sg6#
      • 1...Sg6
        • 2.Sxg6#
      • 1...Sd7
        • 2.Sg6#
      • 1...Sf7
        • 2.Sg6#
      • 1...g4
        • 2.Qf5#
      • 1...Sg4!
  • Keys
    • 1.Bg6!
      • threat
        • 2.Sg2#
      • 1...Rxg6
        • 2.Qxe5#
      • 1...Sxg6
        • 2.Sd3#
      • 1...gxh4
        • 2.Qh6#
      • 1...g4
        • 2.Qh6#
      • 1...Rd3
        • 2.Qxe5#
      • 1...Sd3
        • 2.Sxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 6
  • Sets
    • R(e);P_SPINS(c),XB(E)::QAB1(J),XS(c)
    • R(e);P_SPINS(c)::QAB1(J),XS(c)
    • R(e);P_PINR(D),P_SPINS(c)::QAB1(J),XS(c)
    • S(c);P_SPINR(e),XB(E)::S(B),XS(c)
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • R(e);P_SPINR(e),P_SPINS(c)::QAB1(J),XS(c)
        • S(c);N_GUARD,P_SPINR(e),P_SPINS(c)::R(D),XS(c)
      • Refutation
        • P(b);P_SPINP(b)
    • Try
      • Q(J);
      • Threat
        • S(H)
      • Vars
        • R(e);P_SPINS(c),XB(E)::QAR1(J)
        • S(c);P_SPINR(e),XB(E)::S(B),XS(c)
        • S(c);N_GUARD,P_SPINR(e),XP(F)::S(H)
        • P(d);OGATE,XS(H)::QAR1(J)
        • S(c);N_GUARD,P_SPINR(e)::S(H)
        • S(c);N_GUARD,P_SPINR(e)::S(H),XS(c)
        • P(d);OGATE::QAR1(J)
      • Refutation
        • S(c);P_SPINR(e)
  • Actual
    • B(E);
    • Threat
      • S(H)
    • Vars
      • R(e);P_SPINS(c),XB(E)::QAB1(J),XS(c)
      • S(c);N_GUARD,P_SPINR(e),XB(E)::S(B)
      • P(d);OGATEB,XS(H)::QAB(J)
      • P(d);OGATEB::QAB(J)
      • R(e);P_SPINS(c)::QAB1(J),XS(c)
      • S(c);N_GUARD,P_SPINR(e)::S(B),XS(c)
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