MESON Chess Problem Database

Problem Display
PID: 206249 (3R4/8/K3P3/1N1R4/3pk2r/p6r/2n1b1P1/1BB1Q1n1 w - - 0 1)

Caine, Walter Edmund

Eddy, Edwin John

Il Problema, 1932

3R4/8/K3P3/1N1R4/3pk2r/p6r/2n1b1P1/1BB1Q1n1

#2

9 + 8

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sf3
      • 2.Qxe2#
    • 1...d3
      • 2.Sc3#
  • Tries
    • 1.Bxc2+?
      • 1...d3
        • 2.Sc3#
        • 2.Qb4#
      • 1...Rd3!
    • 1.Re5+?
      • 1...Kd3
        • 2.Qc3#
      • 1...Kxe5!
    • 1.Rg5?
      • threat
        • 2.Rxd4#
      • 1...Rd3
        • 2.Sd6#
      • 1...Sf3
        • 2.Qxe2#
      • 1...d3
        • 2.Sc3#
      • 1...Kd3!
  • Keys
    • 1.Rc5!
      • threat
        • 2.Rxd4#
      • 1...Kd3
        • 2.Bxc2#
      • 1...Rd3
        • 2.Sd6#
      • 1...Sf3
        • 2.Qxe2#
      • 1...d3
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD,S_CUTR(e)::QAR2(C),XB(c)
    • P(f);N_PINS(E),N_SPINS(b)::S(E)
  • Tries
    • Try
      • B(A);CHECK,XS(b)
      • Refutation
        • R(e);N_PINS(E),P_SPINR(e)
    • Try
      • R(F);CHECK
      • Vars
        • K(g);N_PINS(E),N_SPINB(c),P_SPINP(f),S_FLIGHT::QAR1(C)
      • Refutation
        • K(g);N_SPINS(b),P-FLIGHT,XR(F)
    • Try
      • R(F);
      • Threat
        • R1(I),XP(f)
      • Vars
        • R(e);N_PINS(E),N_SPINS(b),SBLOCK::S(E)
        • S(a);N_GUARD,S_CUTR(e)::QAR2(C),XB(c)
        • P(f);N_PINS(E),N_SPINS(b)::S(E)
      • Refutation
        • K(g);N_PINS(E),N_SPINB(c),P_SPINP(f),S_FLIGHT
  • Actual
    • R(F);
    • Threat
      • R1(I),XP(f)
    • Vars
      • K(g);N_PINS(E),N_SPINB(c),P_SPINP(f),S_FLIGHT::B(A),XS(b)
      • R(e);N_PINS(E),N_SPINS(b),SBLOCK::S(E)
      • S(a);N_GUARD,S_CUTR(e)::QAR2(C),XB(c)
      • P(f);N_PINS(E),N_SPINS(b)::S(E)
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