MESON Chess Problem Database

Problem Display
PID: 76468 (b3R3/6Rp/1N2Np2/1PP1k3/K2n1r2/3P4/6QB/1Bb5 w - - 0 1)

Gamage, Frederick

Frederick Gamage (Prcic), 2004

b3R3/6Rp/1N2Np2/1PP1k3/K2n1r2/3P4/6QB/1Bb5

#2

11 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Be4
      • 2.Qxe4#
    • 1...Bd5
      • 2.Qxd5#
    • 1...Sf5+
      • 2.Sc4#
    • 1...Sc6+
      • 2.Qe4#
    • 1...f5
      • 2.Sd7#
  • Tries
    • 1.Sxf4+?
      • 1...Kf5
        • 2.Qh3#
        • 2.Qg4#
      • 1...Se6!
    • 1.Bxf4+?
      • 1...Kf5
        • 2.Qh3#
        • 2.Qg4#
      • 1...Bxf4!
    • 1.Rg5+?
      • 1...Sf5+
        • 2.Sc4#
        • 2.d4#
      • 1...f5
        • 2.Sd7#
      • 1...fxg5!
    • 1.Qxa8?
      • threat
        • 2.Qe4#
        • 2.Qd5#
      • 1...Sc2+
        • 2.Qe4#
      • 1...Se2+
        • 2.Qe4#
      • 1...Sb3+
        • 2.Qe4#
      • 1...Sf3+
        • 2.Qe4#
      • 1...Sxb5+
        • 2.Qe4#
      • 1...Sf5+
        • 2.Sc4#
        • 2.Qe4#
      • 1...Sxe6+
        • 2.Qe4#
      • 1...Kf5
        • 2.Qd5#
      • 1...f5
        • 2.Sd7#
      • 1...Sc6+!
  • Keys
    • 1.Rd7!
      • threat
        • 2.Sxd4#
      • 1...Sc2+
        • 2.Sd4#
      • 1...Se2+
        • 2.Sd4#
      • 1...Sb3+
        • 2.Sd4#
      • 1...Sf3+
        • 2.Sd4#
      • 1...Sxb5+
        • 2.Sd4#
      • 1...Sf5+
        • 2.Sc4#
      • 1...Sc6+
        • 2.Qe4#
      • 1...Sxe6+
        • 2.d4#
      • 1...Kf5
        • 2.Sg7#
      • 1...Bd5
        • 2.Rxd5#
        • 2.Qxd5#
      • 1...f5
        • 2.Qg7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 7
    • REMOVED MATES = 2
  • Sets
    • B(g);N_GUARD::QAR1(B),XB(g)
    • S(b);CHECK,SBLOCK::S(H)
    • S(b);CHECK,S_CUTB(g)::QAR1(B)
    • P(e);SBLOCK::S(H)
  • Tries
    • Try
      • S(I);CHECK,XR(c)
      • Refutation
        • S(b);P_SPINS(b)
    • Try
      • B(C);CHECK,XR(c)
      • Refutation
        • B(a);XB(C)
    • Try
      • R(J);CHECK
      • Vars
        • P(e);P_SPINP(e)::S(H)
      • Refutation
        • P(e);XR(J)
    • Try
      • Q(B);XB(g)
      • Threat
        • DUALS(2)
      • Vars
        • S(b);CHECK::QAR1(B)
        • S(b);CHECK,XP(F)::QAR1(B)
        • S(b);CHECK,P_SPINS(b),XS(I)::QAR1(B)
        • K(d);N_SPINR(c),P-FLIGHT::QAR2(B)
        • P(e);SBLOCK::S(H)
      • Refutation
        • S(b);CHECK
  • Actual
    • R(J);
    • Threat
      • R(K)+S(I),XS(b)
    • Vars
      • S(b);CHECK::R(K)+S(I)
      • S(b);CHECK,XP(F)::R(K)+S(I)
      • S(b);CHECK,SBLOCK::S(H)
      • S(b);CHECK,S_CUTB(g)::QAR1(B)
      • S(b);CHECK,OGATE,P_SPINS(b),XS(I)::P(D)
      • K(d);N_SPINR(c),P-FLIGHT::S(I)
      • P(e);OGATEB,SBLOCK::QAB(B)
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