MESON Chess Problem Database

Problem Display
PID: 240732 (B4b2/2R4p/1prN2pR/1p1k4/4pQ2/2P3N1/1P2K3/8 w - - 0 1)

Makaronets, Leonid

Thema Danicum, 1994

B4b2/2R4p/1prN2pR/1p1k4/4pQ2/2P3N1/1P2K3/8

#2

9 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kc5
      • 2.Qe5#
    • 1...g5
      • 2.Qxg5#
      • 2.Qf5#
  • Tries
    • 1.Bxc6+?
      • 1...Kc5
        • 2.Sgxe4#
        • 2.Bxe4#
        • 2.Bb7#
        • 2.Ba8#
        • 2.Qe5#
        • 2.b4#
      • 1...Ke6!
    • 1.Rxc6?
      • threat
        • 2.Qxe4#
      • 1...e3
        • 2.Qe4#
      • 1...Ke6!
    • 1.Qxe4+?
      • 1...Kc5
        • 2.Sb7#
        • 2.Rxc6#
        • 2.Qxc6#
        • 2.Qd4#
        • 2.Qe5#
      • 1...Kxd6!
    • 1.Qf5+?
      • 1...Kxd6
        • 2.Rd7#
      • 1...gxf5!
  • Keys
    • 1.Sb7!
      • threat
        • 2.Qxe4#
      • 1...Kc4
        • 2.Qf7#
      • 1...Ke6
        • 2.Qf5#
      • 1...Rc4
        • 2.Sc5#
      • 1...Re6
        • 2.Sd6#
      • 1...e3
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • K(c);P-FLIGHT::QAR2(E)
  • Tries
    • Try
      • B(I);CHECK,XR(e)
      • Refutation
        • K(c);P_SPINP(f),S_FLIGHT
    • Try
      • R(H);XR(e)
      • Threat
        • QAB1(E),XP(a)
      • Vars
        • P(a);::QAB1(E)
      • Refutation
        • K(c);P_SPINP(f),S_FLIGHT
    • Try
      • Q(E);CHECK,XP(a)
      • Refutation
        • K(c);N_SPINR(e),P-FLIGHT,P_SPINP(f),XS(F)
    • Try
      • Q(E);CHECK
      • Vars
        • K(c);N_SPINR(e),P-FLIGHT,P_SPINP(f),XS(F)::R1(H)
      • Refutation
        • P(f);XQ(E)
  • Actual
    • S(F);N_PINR(e)
    • Threat
      • QAB1(E),XP(a)
    • Vars
      • K(c);P_SPINP(a),P_SPINR(e),S_FLIGHT::QAB(E)
      • K(c);P_SPINP(f),S_FLIGHT::QAB1(E)
      • R(e);SBLOCK::B(I)+S(F)
      • P(a);::QAB1(E)
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