MESON Chess Problem Database

Problem Display
PID: 18509 (8/2Kp4/3Pp3/p1k5/P7/p2R4/Bnp1p3/Q1RbB3 w - - 0 1)

Matthews, Robin CO

4th Place, Match: Great Britain - Netherlands, 1956

8/2Kp4/3Pp3/p1k5/P7/p2R4/Bnp1p3/Q1RbB3

#2

8 + 9

3174 The Two-move Chess Problem Tradition and Development 1966

SOLUTION

  • SOUND
  • Sets
    • 1...Sxd3
      • 2.Qc3#
    • 1...Sxa4
      • 2.Qe5#
    • 1...Sc4
      • 2.Qd4#
    • 1...e5
      • 2.Rd5#
  • Tries
    • 1.Kb7?
      • 1...Sxa4
        • 2.Qe5#
      • 1...Sc4
        • 2.Qd4#
      • 1...e5
        • 2.Rd5#
      • 1...Sxd3!
    • 1.Bb3?
      • threat
        • 2.Qxa3#
      • 1...Sxd3
        • 2.Qc3#
      • 1...Sxa4
        • 2.Qe5#
      • 1...Sc4
        • 2.Qd4#
      • 1...a2!
    • 1.Rxc2+?
      • 1...Sc4
        • 2.Rxc4#
        • 2.Qd4#
        • 2.Qe5#
      • 1...Bxc2!
    • 1.Qxb2?
      • threat
        • 2.Bf2#
        • 2.Qxa3#
        • 2.Qc3#
        • 2.Qd4#
        • 2.Qe5#
        • 2.Qb5#
        • 2.Qb6#
      • 1...e5
        • 2.Bf2#
        • 2.Rd5#
        • 2.Qxa3#
        • 2.Qc3#
        • 2.Qxe5#
        • 2.Qb5#
        • 2.Qb6#
      • 1...axb2!
  • Keys
    • 1.Qb1!
      • 1...Sxd3
        • 2.Qb6#
      • 1...Sxa4
        • 2.Bf2#
      • 1...Sc4
        • 2.Qb5#
      • 1...e5
        • 2.Rd5#

FEATURES

  • Static
    • TYPE = MUTATE
    • CHANGED MATES = 3
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • S(b);OGATE,XR(E)::QAR2(A)
    • S(b);OGATE,XP(F)::QAR2(A)
    • S(b);N_SPINP(c),OGATE::QAB1(A)
    • P(h);N_GUARD::R1(E)
  • Tries
    • Try
      • K(H);P-FLIGHT
      • Vars
        • S(b);OGATE,XP(F)::QAR2(A)
        • S(b);N_SPINP(c),OGATE::QAB1(A)
        • P(h);N_GUARD::R1(E)
      • Refutation
        • S(b);XR(E)
    • Try
      • B(D);
      • Threat
        • QAB(A),XP(e)
      • Vars
        • S(b);OGATE,XR(E)::QAR2(A)
        • S(b);OGATE,XP(F)::QAR2(A)
        • S(b);N_SPINP(c),OGATE::QAB1(A)
      • Refutation
        • P(e);
    • Try
      • R(B);CHECK,XP(c)
      • Refutation
        • B(a);XR(B)
    • Try
      • Q(A);XS(b)
      • Threat
        • DUALS(7)
      • Refutation
        • P(e);XQ(A)
  • Actual
    • Q(A);
    • Vars
      • S(b);OGATE,XR(E)::QAB1(A)
      • S(b);XP(F)::B(C)
      • S(b);N_SPINP(c),OGATE::QAR1(A)
      • P(h);N_GUARD::R1(E)
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