MESON Chess Problem Database

Problem Display
PID: 74779 (1Q1R2B1/6p1/r2nn2b/p7/1p2kB1R/8/pNp1NPP1/Kb5r w - - 0 1)

Gamage, Frederick

1st Prize, Xadrez Brasileiro, 1945

1Q1R2B1/6p1/r2nn2b/p7/1p2kB1R/8/pNp1NPP1/Kb5r

#2

10 + 12

5397 Frederick Gamage (Prcic) 2004

SOLUTION

  • SOUND
  • Sets
    • 1...Sc4
      • 2.Sg3#
    • 1...Sb5
      • 2.Sg3#
      • 2.Qe5#
    • 1...Sf5
      • 2.Qe5#
      • 2.f3#
    • 1...Sb7
      • 2.Sg3#
      • 2.Qe5#
    • 1...Sf7
      • 2.Sg3#
    • 1...Sc8
      • 2.Sg3#
      • 2.Qe5#
    • 1...Se8
      • 2.Sg3#
      • 2.Qe5#
    • 1...Sd4
      • 2.Sg3#
  • Tries
    • 1.f3+?
      • 1...Kd5
        • 2.Qb5#
      • 1...Kf5!
  • Keys
    • 1.Qc8!
      • threat
        • 2.Qxe6#
      • 1...Kd5
        • 2.Qc4#
      • 1...Kf5
        • 2.Qxe6#
      • 1...Sxc8
        • 2.Sg3#
      • 1...Sxf4
        • 2.Qe6#
      • 1...Sxd8
        • 2.f3#
      • 1...Sc4
        • 2.Sg3#
      • 1...Sb5
        • 2.Sg3#
      • 1...Sf5
        • 2.f3#
      • 1...Sb7
        • 2.Sg3#
      • 1...Sf7
        • 2.Sg3#
      • 1...Se8
        • 2.Sg3#
      • 1...Sd4
        • 2.Sg3#
      • 1...Sc5
        • 2.f3#
      • 1...Sg5
        • 2.Bh2#
      • 1...Sc7
        • 2.f3#
      • 1...Sf8
        • 2.f3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 13
    • REMOVED MATES = 0
  • Sets
    • S(i);::S(C)
    • S(j);SBLOCK::S(C)
  • Tries
    • Try
      • P(D);CHECK
      • Vars
        • K(f);P_SPINS(i),S_FLIGHT::QAR2(H)
      • Refutation
        • K(f);S_FLIGHT
  • Actual
    • Q(H);
    • Threat
      • QAR2(H),XS(j)
    • Vars
      • K(f);P_SPINS(i),S_FLIGHT::QAB1(H)
      • K(f);P_SPINS(j),S_FLIGHT::QAB1(H),XS(j)
      • S(i);XQ(H)::S(C)
      • S(j);P_SPINS(j),XB(F)::QAR2(H)
      • S(j);XR(I)::P(D)
      • S(i);::S(C)
      • S(i);SBLOCK::P(D)
      • S(j);SBLOCK::S(C)
      • S(j);::P(D)
      • S(j);N_GUARD,S_CUTB(k)::R(G)+B(F)
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