MESON Chess Problem Database

Problem Display
PID: 139323 (8/8/2p3p1/8/Q3N2k/6pP/8/6K1 w - - 0 1)

Fomichev, Evgeny Vasilevich

Aleksandr Galitzky - Shakhmaty Geine (Vol 1), 2010

8/8/2p3p1/8/Q3N2k/6pP/8/6K1

#2

4 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kxh3
      • 2.Sg5#
  • Tries
    • 1.Sf6+?
      • 1...Kxh3
        • 2.Qg4#
      • 1...Kg5!
    • 1.Qa1?
      • threat
        • 2.Qh8#
      • 1...Kh5
        • 2.Qh8#
      • 1...Kxh3!
    • 1.Qa7?
      • threat
        • 2.Qh7#
      • 1...Kh5
        • 2.Qh7#
      • 1...Kxh3!
    • 1.Qa8?
      • threat
        • 2.Qh8#
      • 1...Kh5
        • 2.Qh8#
      • 1...Kxh3!
  • Keys
    • 1.Qd4!
      • threat
        • 2.Qh8#
      • 1...Kxh3
        • 2.Sg5#
      • 1...Kh5
        • 2.Qh8#

This is a version of 139322

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);P-FLIGHT,XP(B)::S(D)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(b);P-FLIGHT,XP(B)::QAB1(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);
      • Threat
        • QAR(C)
      • Vars
        • K(b);P-FLIGHT::QAR(C)
      • Refutation
        • K(b);P-FLIGHT,XP(B)
    • Try
      • Q(C);
      • Threat
        • QAR(C)
      • Vars
        • K(b);P-FLIGHT::QAR2(C)
      • Refutation
        • K(b);P-FLIGHT,XP(B)
    • Try
      • Q(C);
      • Threat
        • QAR(C)
      • Vars
        • K(b);P-FLIGHT::QAR(C)
      • Refutation
        • K(b);P-FLIGHT,XP(B)
  • Actual
    • Q(C);
    • Threat
      • QAR(C)
    • Vars
      • K(b);P-FLIGHT,XP(B)::S(D)
      • K(b);P-FLIGHT::QAR(C)
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