MESON Chess Problem Database

Problem Display
PID: 239202 (8/8/8/1Q6/8/3ppp2/4k2K/7R w - - 0 1)

Kozhakin, Vladimir Vladimirovich

Problemist Pribuzhya, 1991

8/8/8/1Q6/8/3ppp2/4k2K/7R

#2

3 + 4

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kd2
      • 2.Qb2#
  • Tries
    • 1.Kg3?
      • 1...Kd2
        • 2.Qb2#
      • 1...f2!
    • 1.Qxd3+?
      • 1...Kf2
        • 2.Rf1#
        • 2.Qf1#
      • 1...Kxd3!
  • Keys
    • 1.Qb1!
      • threat
        • 2.Qe1#
      • 1...Kd2
        • 2.Qb2#
      • 1...Kf2
        • 2.Qe1#
        • 2.Qf1#
      • 1...f2
        • 2.Qd1#
      • 1...d2
        • 2.Qf1#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);N_SPINP(b),P-FLIGHT::QAR2(C)
  • Tries
    • Try
      • K(B);S_FLIGHT
      • Vars
        • K(a);N_SPINP(b),P-FLIGHT::QAR2(C)
      • Refutation
        • P(d);
    • Try
      • Q(C);CHECK,XP(b)
      • Refutation
        • K(a);S_FLIGHT,XQ(C)
  • Actual
    • Q(C);N_PINP(b)
    • Threat
      • QAR1(C)
    • Vars
      • K(a);P-FLIGHT::QAR2(C)
      • P(d);SBLOCK::QAB1(C)
      • P(b);SBLOCK::QAB1(C)
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