MESON Chess Problem Database

Problem Display
PID: 109797 (8/8/8/1Q6/5p2/4pk2/R6P/5K2 w - - 0 1)

Zuk, Aleksandr

Chepizhni-60 JT (Kudesnik), 1994

8/8/8/1Q6/5p2/4pk2/R6P/5K2

#2

4 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...e2+
      • 2.Qxe2#
  • Tries
    • 1.Rd2?
      • 1...e2+
        • 2.Qxe2#
      • 1...Ke4
        • 2.Qd5#
      • 1...exd2
        • 2.Qe2#
      • 1...Kg4!
    • 1.Rg2?
      • threat
        • 2.Qc6#
        • 2.Qd5#
        • 2.Qb7#
      • 1...e2+
        • 2.Qxe2#
      • 1...Ke4!
    • 1.Ra4?
      • threat
        • 2.Qe2#
        • 2.Qh5#
      • 1...e2+
        • 2.Qxe2#
      • 1...Kg4!
    • 1.Qc4?
      • 1...e2+
        • 2.Qxe2#
      • 1...Kg4!
    • 1.Qe8?
      • 1...e2+
        • 2.Qxe2#
      • 1...Kg4!
    • 1.Qe5?
      • 1...e2+
        • 2.Qxe2#
      • 1...Kg4!
  • Keys
    • 1.Ra5!
      • 1...e2+
        • 2.Qxe2#
      • 1...Ke4
        • 2.Qd5#
      • 1...Kg4
        • 2.Qh5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(a);CHECK::QAB1(D),XP(a)
  • Tries
    • Try
      • R(B);
      • Vars
        • P(a);CHECK::QAB1(D),XP(a)
        • K(b);S_FLIGHT::QAB1(D)
        • P(a);XR(B)::QAB1(D)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(B);
      • Threat
        • DUALS(3)
      • Vars
        • P(a);CHECK::QAB1(D),XP(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(B);
      • Threat
        • DUALS(2)
      • Vars
        • P(a);CHECK::QAB1(D),XP(a)
      • Refutation
        • K(b);P_SPINP(c),S_FLIGHT
    • Try
      • Q(D);
      • Vars
        • P(a);CHECK::QAB1(D),XP(a)
      • Refutation
        • K(b);P_SPINP(c),S_FLIGHT
    • Try
      • Q(D);
      • Vars
        • P(a);CHECK,OGATE::QAB1(D),XP(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(D);
      • Vars
        • P(a);CHECK,OGATE::QAB1(D),XP(a)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • R(B);
    • Vars
      • P(a);CHECK::QAB1(D),XP(a)
      • K(b);S_FLIGHT::QAB1(D)
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