MESON Chess Problem Database

Problem Display
PID: 238168 (8/8/8/8/7Q/4K3/2pp4/2NkN3 w - - 0 1)

Murashev, Pavel Aleksandrovich

Kudesnik, 2008

8/8/8/8/7Q/4K3/2pp4/2NkN3

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qd4?
      • threat
        • 2.Qxd2#
      • 1...Kxc1
        • 2.Qa1#
      • 1...Kxe1!
    • 1.Qg4+?
      • 1...Kxe1
        • 2.Qe2#
        • 2.Qg1#
      • 1...Kxc1!
    • 1.Qh5+?
      • 1...Kxe1
        • 2.Qe2#
        • 2.Qh1#
      • 1...Kxc1!
  • Keys
    • 1.Scd3!
      • threat
        • 2.Qg4#
        • 2.Qh5#
      • 1...dxe1Q+
        • 2.Qxe1#
      • 1...dxe1R+
        • 2.Qxe1#
      • 1...dxe1S
        • 2.Qxe1#
      • 1...c1S
        • 2.Sb2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(D);P_PINP(c)
      • Threat
        • QAR1(D),XP(c)
      • Vars
        • K(a);N_SPINP(c),OGATEB,P-FLIGHT,XS(A)::QAR2(D)
      • Refutation
        • K(a);N_SPINP(c),P-FLIGHT,XS(B)
    • Try
      • Q(D);CHECK
      • Refutation
        • K(a);P-FLIGHT,XS(A)
    • Try
      • Q(D);CHECK
      • Refutation
        • K(a);P-FLIGHT,XS(A)
  • Actual
    • S(A);
    • Threat
      • DUALS(2)
    • Vars
      • P(c);CHECK,OGATE,XS(B)::QAR1(D),XQ(c)
      • P(c);CHECK,OGATE,XS(B)::QAR1(D),XR(c)
      • P(c);OGATE,XS(B)::QAR1(D),XS(c)
      • P(b);SBLOCK::S(A)
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