MESON Chess Problem Database

Problem Display
PID: 139991 (2B2R1B/6nP/3pNN2/1K3k1P/2Pprp2/3Q2p1/p5n1/bb6 w - - 0 1)

Eddy, Edwin John

2nd HM., BCPS 034. Ty., 1938

2B2R1B/6nP/3pNN2/1K3k1P/2Pprp2/3Q2p1/p5n1/bb6

#2

10 + 11

56 The Problemist 1938

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Sg4#
  • Tries
    • 1.Sxd4+?
      • 1...Ke5
        • 2.Sf3#
        • 2.Sc6#
        • 2.Sg4#
        • 2.Sd7#
      • 1...Kg5!
    • 1.Sxg7+?
      • 1...Ke5
        • 2.Sg4#
        • 2.Sd7#
      • 1...Kg5!
    • 1.Sxe4+?
      • 1...Ke5
        • 2.Bxg7#
      • 1...Kg4!
    • 1.Sd5+?
      • 1...Ke5
        • 2.Bxg7#
      • 1...Kg4!
    • 1.Se8+?
      • 1...Ke5
        • 2.Bxg7#
      • 1...Kg4!
    • 1.Sg8+?
      • 1...Ke5
        • 2.Bxg7#
      • 1...Kg4!
  • Keys
    • 1.Qf3!
      • threat
        • 2.Sg4#
      • 1...Re5+
        • 2.Sd5#
      • 1...Ke5
        • 2.Sg4#
      • 1...Rxe6
        • 2.Qd5#
      • 1...Sxh5
        • 2.Qxh5#
      • 1...Sxe6
        • 2.Sxe4#
      • 1...Se8
        • 2.Sxe8#
      • 1...d3
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • K(i);N_SPINR(g),P-FLIGHT::S(F)
  • Tries
    • Try
      • S(E);CHECK,XP(f)
      • Refutation
        • K(i);N_SPINR(g),P-FLIGHT
    • Try
      • S(E);CHECK,XS(k)
      • Refutation
        • K(i);N_SPINR(g),P-FLIGHT
    • Try
      • S(F);CHECK,XR(g)
      • Vars
        • K(i);P-FLIGHT,P_SPINS(k)::B(J),XS(k)
      • Refutation
        • K(i);S_FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • K(i);N_SPINR(g),P-FLIGHT,P_SPINS(k)::B(J),XS(k)
      • Refutation
        • K(i);N_SPINR(g),S_FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • K(i);N_SPINR(g),P-FLIGHT,P_SPINS(k)::B(J),XS(k)
      • Refutation
        • K(i);N_SPINR(g),S_FLIGHT
    • Try
      • S(F);CHECK
      • Vars
        • K(i);N_SPINR(g),P-FLIGHT,P_SPINS(k)::B(J),XS(k)
      • Refutation
        • K(i);N_SPINR(g),S_FLIGHT
  • Actual
    • Q(A);N_PINR(g),P_PINP(h)
    • Threat
      • R(I)+S(F)
    • Vars
      • R(g);CHECK,SBLOCK::R(I)+S(F)
      • K(i);N_SPINP(h),P-FLIGHT::S(F)
      • R(g);OGATE,P_SPINR(g),XS(E)::QAR2(A)
      • S(k);OGATE,XP(D)::QAR2(A),XS(k)
      • S(k);P_SPINS(k),XS(E)::R(I)+S(F),XR(g)
      • S(k);::R(I)+S(F),XS(k)
      • P(f);S_CUTB(b)::QAB1(A),XR(g)
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