MESON Chess Problem Database

Problem Display
PID: 104545 (8/4B3/6p1/2N3pn/4Rpk1/8/1Q4K1/8 w - - 0 1)

Polichuk, M

Khliborob Ukrani, 1965

8/4B3/6p1/2N3pn/4Rpk1/8/1Q4K1/8

#2

5 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qe5?
      • threat
        • 2.Qxg5#
      • 1...Kh4
        • 2.Qxg5#
      • 1...Sf6!
    • 1.Qf6?
      • threat
        • 2.Qxg5#
      • 1...Kh4
        • 2.Qxg5#
      • 1...Sxf6!
    • 1.Qe2+?
      • 1...Kf5
        • 2.Re5#
      • 1...Kh4!
    • 1.Qb3?
      • threat
        • 2.Qh3#
      • 1...Kh4
        • 2.Qh3#
      • 1...Kf5
        • 2.Qe6#
      • 1...Sg3!
  • Keys
    • 1.Qh8!
      • 1...Kh4
        • 2.Rxf4#
      • 1...Kf5
        • 2.Qc8#
      • 1...Sg3
        • 2.Qh3#
      • 1...Sf6
        • 2.Qh3#
      • 1...Sg7
        • 2.Qh3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR1(A),XP(c)
      • Vars
        • K(b);P-FLIGHT::QAB1(A),XP(c)
      • Refutation
        • S(d);
    • Try
      • Q(A);
      • Threat
        • QAR1(A),XP(c)
      • Vars
        • K(b);P-FLIGHT::QAB1(A),XP(c)
      • Refutation
        • S(d);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);N_SPINP(a),S_FLIGHT::R1(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Vars
        • K(b);P-FLIGHT::QAR1(A)
        • K(b);N_SPINP(a),S_FLIGHT::QAB1(A)
      • Refutation
        • S(d);
  • Actual
    • Q(A);
    • Vars
      • K(b);P-FLIGHT,P_SPINS(d)::R(C),XP(a)
      • K(b);N_SPINP(a),S_FLIGHT::QAB(A)
      • S(d);OGATE::QAB1(A)
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