MESON Chess Problem Database

Problem Display
PID: 132379 (B3Kn2/3p1pb1/N1Pk4/p3p1N1/4P1P1/6r1/b6B/Q7 w - - 0 1)

Luke, R

The Field, 1956

(First published on Thu Dec 6 1956)

B3Kn2/3p1pb1/N1Pk4/p3p1N1/4P1P1/6r1/b6B/Q7

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rb3
      • 2.Qd4#
    • 1...Bb3
      • 2.Qa3#
    • 1...Se6
      • 2.Sxf7#
  • Tries
    • 1.Qd4+?
      • 1...Bd5
        • 2.Qc5#
        • 2.Qxd5#
      • 1...exd4!
    • 1.Qd1+?
      • 1...Bd5
        • 2.Qxd5#
      • 1...Rd3!
    • 1.Qxa2?
      • threat
        • 2.Sxf7#
        • 2.Qd5#
      • 1...dxc6
        • 2.Sxf7#
      • 1...Rd3
        • 2.Sxf7#
      • 1...Rf3
        • 2.Qd5#
      • 1...f5
        • 2.Sf7#
        • 2.Qd5#
      • 1...f6
        • 2.Sf7#
        • 2.Qd5#
      • 1...Rb3!
  • Keys
    • 1.Qb2!
      • threat
        • 2.Qb8#
      • 1...Rb3
        • 2.Qd4#
      • 1...Bb3
        • 2.Qa3#
      • 1...Se6
        • 2.Sxf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • R(b);P_SPINP(d),S_CUTB(a)::QAR2(A)
    • B(a);OGATE::QAB(A)
    • S(i);SBLOCK,S_CUTB(a)::S(E),XP(g)
  • Tries
    • Try
      • Q(A);CHECK
      • Refutation
        • P(d);P_SPINR(b),XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAR1(A),XB(a)
      • Refutation
        • R(b);P_SPINP(d),P_SPINR(b)
    • Try
      • Q(A);XB(a)
      • Threat
        • DUALS(2)
      • Vars
        • P(f);XP(G)::S(E),XP(g)
        • R(b);P_SPINP(d)::S(E),XP(g)
        • R(b);P_SPINP(d)::QAR1(A)
      • Refutation
        • R(b);P_SPINP(d)
  • Actual
    • Q(A);
    • Threat
      • QAB(A)
    • Vars
      • R(b);P_SPINP(d),S_CUTB(a)::QAR2(A)
      • B(a);S_CUTR(b)::QAB(A)
      • S(i);SBLOCK,S_CUTB(a)::S(E),XP(g)
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