MESON Chess Problem Database

Problem Display
PID: 238169 (8/8/8/8/3N2K1/1Q6/2pp4/2Nk4 w - - 0 1)

Murashev, Pavel Aleksandrovich

Kudesnik, 2008

8/8/8/8/3N2K1/1Q6/2pp4/2Nk4

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc1
      • 2.Qxc2#
  • Tries
    • 1.Qc4?
      • threat
        • 2.Qf1#
      • 1...Kxc1
        • 2.Qxc2#
      • 1...Ke1
        • 2.Qe2#
      • 1...dxc1Q
        • 2.Qe2#
      • 1...dxc1B
        • 2.Qe2#
      • 1...dxc1R
        • 2.Qe2#
      • 1...dxc1S!
    • 1.Qf3+?
      • 1...Ke1
        • 2.Sd3#
        • 2.Sxc2#
        • 2.Qe2#
      • 1...Kxc1!
  • Keys
    • 1.Qd3!
      • threat
        • 2.Qf1#
      • 1...Kxc1
        • 2.Qxc2#
      • 1...Ke1
        • 2.Qe2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(a);N_SPINP(b),P-FLIGHT,XS(A)::QAR1(B),XP(b)
  • Tries
    • Try
      • Q(B);N_PINP(b)
      • Threat
        • QAR2(B)
      • Vars
        • K(a);P-FLIGHT,P_SPINP(b),XS(A)::QAR1(B),XP(b)
        • K(a);P-FLIGHT::QAR1(B)
        • P(c);SBLOCK,XS(A)::QAB1(B)
      • Refutation
        • P(c);XS(A)
    • Try
      • Q(B);CHECK,N_PINP(b)
      • Refutation
        • K(a);P-FLIGHT,XS(A)
  • Actual
    • Q(B);N_PINP(b),P_PINP(c)
    • Threat
      • QAR2(B)
    • Vars
      • K(a);N_SPINP(c),P-FLIGHT,XS(A)::QAR1(B),XP(b)
      • K(a);N_SPINP(c),P-FLIGHT::QAR1(B)
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