MESON Chess Problem Database

Problem Display
PID: 178731 (Q4bK1/2Bp2p1/1r6/3N4/8/4NkPP/2BR4/8 w - - 0 1)

Overkamp, Petrus

Busmen's Chess Review, 1968

Q4bK1/2Bp2p1/1r6/3N4/8/4NkPP/2BR4/8

#2

9 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Rb1
      • 2.Qxf8#
    • 1...Rb2
      • 2.Qxf8#
    • 1...Rb3
      • 2.Qxf8#
    • 1...Rb5
      • 2.Qxf8#
    • 1...Rb7
      • 2.Qxf8#
  • Tries
    • 1.Sxb6+?
      • 1...Kxe3
        • 2.Sc4#
        • 2.Bf4#
      • 1...d5!
  • Keys
    • 1.Sf1!
      • threat
        • 2.Sh2#
      • 1...Rd6
        • 2.Qa3#
      • 1...Bd6
        • 2.Sxb6#
      • 1...d6
        • 2.Qxf8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • R(b);N_GUARD::QAR(H),XB(e)
  • Tries
    • Try
      • S(F);CHECK,XR(b)
      • Refutation
        • P(c);P_SPINP(c)
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • R(b);N_GUARD,S_CUTB(e)::QAR(H)
      • B(e);S_CUTP(c)::QAB(H)+S(F),XR(b)
      • P(c);S_CUTR(b)::QAR(H),XB(e)
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