MESON Chess Problem Database

Problem Display
PID: 246679 (8/8/5P2/2Ppk1K1/BB2Np2/5P2/2P4Q/8 w - - 0 1)

Murashev, Pavel Aleksandrovich

Moscow Ty., 2019

8/8/5P2/2Ppk1K1/BB2Np2/5P2/2P4Q/8

#2

9 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sc3?
      • 1...Kd4
        • 2.Qxf4#
      • 1...d4
        • 2.Qe2#
      • 1...Ke6!
    • 1.Sd6?
      • 1...Kd4
        • 2.Qxf4#
      • 1...Ke6
        • 2.Qe2#
      • 1...d4!
    • 1.Qxf4+?
      • 1...Kd4
        • 2.Sd2#
        • 2.Sf2#
        • 2.Sc3#
        • 2.Sg3#
        • 2.Sd6#
      • 1...Ke6!
    • 1.Qh7?
      • 1...Ke6
        • 2.Qe7#
      • 1...dxe4
        • 2.Qxe4#
      • 1...d4
        • 2.Qf5#
      • 1...Kd4!
  • Keys
    • 1.Qe2!
      • 1...Kd4
        • 2.Bc3#
      • 1...Ke6
        • 2.Sd6#
      • 1...dxe4
        • 2.Qxe4#
      • 1...d4
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);
      • Vars
        • K(c);N_SPINP(a),S_FLIGHT::QAR2(B),XP(a)
        • P(b);SBLOCK::QAR(B)
      • Refutation
        • K(c);N_SPINP(a),P-FLIGHT
    • Try
      • S(F);
      • Vars
        • K(c);N_SPINP(a),S_FLIGHT::QAR2(B),XP(a)
        • K(c);N_SPINP(a),P-FLIGHT::QAR(B)
      • Refutation
        • P(b);
    • Try
      • Q(B);CHECK,XP(a)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(B);N_PINP(a)
      • Vars
        • K(c);P-FLIGHT::QAR1(B)
        • P(b);OGATE,XS(F)::QAR1(B),XP(b)
        • P(b);SBLOCK::QAR1(B)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(B);N_PINP(a)
    • Vars
      • K(c);S_FLIGHT::B(E)
      • K(c);P-FLIGHT::QAR(B)+S(F)
      • P(b);OGATE,P_SPINP(b),XS(F)::QAR1(B),XP(b)
      • P(b);SBLOCK::QAR(B)+S(F)
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