MESON Chess Problem Database

Problem Display
PID: 10880 (3B4/3R4/2B1p3/r2P4/3k2K1/PPp1ppN1/2p5/4Q3 w - - 0 1)

Rice, John Michael

Problem (Zagreb), 1969

3B4/3R4/2B1p3/r2P4/3k2K1/PPp1ppN1/2p5/4Q3

#2

9 + 7

133 The Problemist Supplement 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qxc3#
      • 2.Qxe3#
    • 1...Ke5
      • 2.Qxc3#
      • 2.Qxe3#
  • Tries
    • 1.Sf5+?
      • 1...Kd3
        • 2.Qxe3#
      • 1...Ke4
        • 2.Qxe3#
      • 1...Kc5
        • 2.Qxc3#
        • 2.Qxe3#
      • 1...Ke5
        • 2.Qxe3#
      • 1...exf5+!
    • 1.Bb6+?
      • 1...Kd3
        • 2.Qxe3#
      • 1...Ke5
        • 2.Qxc3#
      • 1...Rc5!
    • 1.Bf6+?
      • 1...Kd3
        • 2.Qxc3#
      • 1...Kc5
        • 2.Qxe3#
      • 1...e5!
  • Keys
    • 1.dxe6+!
      • 1...Kc5
        • 2.Qxc3#
      • 1...Ke5
        • 2.Qxe3#
      • 1...Rd5
        • 2.Rxd5#

FEATURES

  • Static
    • TYPE = CHECKING_KEY
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(e);P-FLIGHT::QAR1(A),XP(c)
        • K(e);P-FLIGHT,P_SPINP(c)::QAR1(A),XP(c)
        • K(e);P_SPINP(c),S_FLIGHT::QAR2(A),XP(c)
      • Refutation
        • P(g);CHECK,XS(D)
    • Try
      • B(I);CHECK
      • Vars
        • K(e);P-FLIGHT::QAR1(A),XP(c)
        • K(e);P_SPINP(c),S_FLIGHT::QAB(A),XP(b)
      • Refutation
        • R(f);P_SPINR(f)
    • Try
      • B(I);CHECK
      • Vars
        • K(e);P-FLIGHT::QAR1(A),XP(b)
        • K(e);S_FLIGHT::QAB(A),XP(c)
      • Refutation
        • P(g);P_SPINP(g)
  • Actual
    • P(F);CHECK,XP(g)
    • Vars
      • K(e);S_FLIGHT::QAR2(A),XP(b)
      • K(e);P_SPINP(c),S_FLIGHT::QAR2(A),XP(c)
      • R(f);N_GUARD,P_SPINR(f)::R1(H),XR(f)
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