MESON Chess Problem Database

Problem Display
PID: 139738 (8/1bp5/7p/4k2p/1N5B/2K4B/2nN2p1/Q7 w - - 0 1)

Fomichev, Evgeny Vasilevich

Aleksandr Galitzky - Shakhmaty Geine (Vol 1), 2010

8/1bp5/7p/4k2p/1N5B/2K4B/2nN2p1/Q7

#2

6 + 7

SOLUTION

  • SOUND
  • Tries
    • 1.Qe1+?
      • 1...Kf4
        • 2.Sd3#
        • 2.Qg3#
      • 1...Kd6
        • 2.Be7#
        • 2.Qe7#
      • 1...Be4
        • 2.Qg3#
      • 1...Se3
        • 2.Qg3#
      • 1...Sxe1!
    • 1.Qa5+?
      • 1...Kd6
        • 2.Sc4#
      • 1...Bd5
        • 2.Qxc7#
      • 1...c5
        • 2.Qc7#
      • 1...Kf4!
  • Keys
    • 1.Qg1!
      • threat
        • 2.Qh2#
      • 1...Kf4
        • 2.Sd3#
      • 1...Kd6
        • 2.Sc4#
      • 1...Sxb4
        • 2.Qd4#

This is a version of 139737

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • B(f);P_SPINB(f)::QAB(A)
        • S(a);P_SPINS(a)::QAB(A)
      • Refutation
        • S(a);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);S_FLIGHT::S(B)
        • B(f);P_SPINB(f)::QAB(A),XP(g)
        • P(g);P_SPINP(g)::QAB(A)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • Q(A);
    • Threat
      • QAB(A)
    • Vars
      • K(c);S_FLIGHT::S(E)
      • K(c);S_FLIGHT::S(B)
      • S(a);N_GUARD,XS(E)::QAB1(A)
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