MESON Chess Problem Database

Problem Display
PID: 105583 (8/8/1KBp4/4k2N/8/2p4Q/8/8 w - - 0 1)

Kolpakov, Viktor Sergeevich

Kudesnik 02. TT, 1993

8/8/1KBp4/4k2N/8/2p4Q/8/8

#2

4 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Qf5+?
      • 1...Kd4
        • 2.Qe4#
      • 1...Kxf5!
    • 1.Qe6+?
      • 1...Kd4
        • 2.Qe4#
      • 1...Kxe6!
    • 1.Qxc3+?
      • 1...Ke6
        • 2.Qf6#
      • 1...Kf5!
    • 1.Qd3?
      • threat
        • 2.Qe4#
        • 2.Qd5#
      • 1...d5
        • 2.Qxd5#
      • 1...Ke6!
  • Keys
    • 1.Qf3!
      • threat
        • 2.Qe4#
        • 2.Qd5#
        • 2.Qf6#
      • 1...Kd4
        • 2.Qe4#
      • 1...Ke6
        • 2.Qf6#
      • 1...d5
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(A)
      • Refutation
        • K(b);P-FLIGHT,XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(A)
      • Refutation
        • K(b);P-FLIGHT,XQ(A)
    • Try
      • Q(A);CHECK,XP(a)
      • Vars
        • K(b);OGATE,P-FLIGHT::QAR1(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • P(c);::QAR1(A),XP(c)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(A);
    • Threat
      • DUALS(3)
    • Vars
      • K(b);S_FLIGHT::QAR1(A)
      • K(b);P-FLIGHT::QAR1(A)
      • P(c);::QAR1(A),XP(c)
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