MESON Chess Problem Database

Problem Display
PID: 186673 (8/2B5/6RK/5kp1/8/6Q1/2P3bp/4rn1N w - - 0 1)

Basman, Michael J

Chess, 1960

8/2B5/6RK/5kp1/8/6Q1/2P3bp/4rn1N

#2

6 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qd3#
    • 1...Re4
      • 2.Qxg5#
    • 1...Bf3
      • 2.Qxf3#
    • 1...Bh3
      • 2.Qf3#
    • 1...Be4
      • 2.Qxg5#
    • 1...g4
      • 2.Qf4#
      • 2.Qxg4#
  • Tries
    • 1.Rf6+?
      • 1...Ke4
        • 2.Qe5#
        • 2.Qd3#
      • 1...Kxf6!
    • 1.Qh3+?
      • 1...Ke4
        • 2.Qd3#
      • 1...g4
        • 2.Qxg4#
      • 1...Bxh3!
  • Keys
    • 1.Kh5!
      • threat
        • 2.Qg4#
      • 1...Bf3+
        • 2.Qxf3#
      • 1...Sxg3+
        • 2.Sxg3#
      • 1...Ke4
        • 2.Qd3#
      • 1...Re4
        • 2.Qxg5#
      • 1...Bh3
        • 2.Qf3#
      • 1...Se3
        • 2.Qe5#
      • 1...g4
        • 2.Qf4#
        • 2.Qxg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • K(e);S_FLIGHT::QAB1(C)
    • R(a);SBLOCK::QAR1(C),XP(f)
    • B(c);N_GUARD::QAR2(C),XB(c)
    • B(c);N_GUARD::QAR2(C)
    • B(c);SBLOCK::QAR1(C),XP(f)
  • Tries
    • Try
      • R(D);CHECK
      • Refutation
        • K(e);P-FLIGHT,XR(D)
    • Try
      • Q(C);CHECK
      • Vars
        • K(e);S_FLIGHT::QAB1(C)
        • P(f);P_SPINP(f)::QAB1(C),XP(f)
      • Refutation
        • B(c);XQ(C)
  • Actual
    • K(E);P-FLIGHT
    • Threat
      • QAB1(C)
    • Vars
      • B(c);CHECK,N_GUARD::QAR2(C),XB(c)
      • S(b);CHECK,XQ(C)::S(A),XS(b)
      • K(e);S_FLIGHT::QAB1(C)
      • R(a);SBLOCK::QAR1(C),XP(f)
      • B(c);N_GUARD::QAR2(C)
      • S(b);S_CUTR(a)::QAR1(C)
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