MESON Chess Problem Database

Problem Display
PID: 233747 (8/2p2Qp1/2P3Pp/1P2k2K/1P2p3/4N3/3P1P2/8 w - - 0 1)

Poponin, Vladimir Grigorievich

Freie Presse, 1996

8/2p2Qp1/2P3Pp/1P2k2K/1P2p3/4N3/3P1P2/8

#2

9 + 5

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Qd5#
    • 1...Kd6
      • 2.Sc4#
  • Tries
    • 1.Kg4?
      • 1...Kd4
        • 2.Qd5#
      • 1...Kd6
        • 2.Sc4#
      • 1...h5+!
    • 1.Kh4?
      • 1...Kd4
        • 2.Qd5#
      • 1...Kd6
        • 2.Sc4#
      • 1...h5!
    • 1.Sg4+?
      • 1...Kd6
        • 2.Qd7#
      • 1...Kd4!
    • 1.Qd5+?
      • 1...Kf4
        • 2.Qf5#
      • 1...Kf6!
    • 1.Qe6+?
      • 1...Kd4
        • 2.Qd5#
      • 1...Kf4
        • 2.Qf5#
      • 1...Kxe6!
    • 1.Qf5+?
      • 1...Kd4
        • 2.Qd5#
      • 1...Kd6!
    • 1.Qxc7+?
      • 1...Kd4
        • 2.Qd6#
      • 1...Kf6
        • 2.Qd6#
      • 1...Ke6!
    • 1.Qxg7+?
      • 1...Kf4
        • 2.Qf6#
      • 1...Kd6
        • 2.Qf6#
      • 1...Ke6!
    • 1.f3?
      • 1...Kd4
        • 2.Qd5#
      • 1...Kd6
        • 2.Sc4#
      • 1...exf3!
    • 1.f4+?
      • 1...Kd4
        • 2.Qc4#
        • 2.Qd5#
        • 2.Qd7#
      • 1...Kd6
        • 2.Sc4#
        • 2.Sf5#
        • 2.Qd7#
      • 1...exf4 ep!
  • Keys
    • 1.Qd7!
      • 1...Kf4
        • 2.Qf5#
      • 1...Kf6
        • 2.Sg4#

FEATURES

  • Static
    • TYPE = WAITER
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • K(b);S_FLIGHT::QAR1(I)
    • K(b);S_FLIGHT::S(C)
  • Tries
    • Try
      • K(F);S_FLIGHT
      • Vars
        • K(b);S_FLIGHT::QAR1(I)
        • K(b);S_FLIGHT::S(C)
      • Refutation
        • P(c);CHECK
    • Try
      • K(F);P-FLIGHT
      • Vars
        • K(b);S_FLIGHT::QAR1(I)
        • K(b);S_FLIGHT::S(C)
      • Refutation
        • P(c);
    • Try
      • S(C);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(I)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(I);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(I)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(I);CHECK
      • Vars
        • K(b);S_FLIGHT::QAR1(I)
      • Refutation
        • K(b);P-FLIGHT,XQ(I)
    • Try
      • Q(I);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR1(I)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(I);CHECK,XP(d)
      • Vars
        • K(b);S_FLIGHT::QAR2(I)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(I);CHECK,XP(e)
      • Vars
        • K(b);S_FLIGHT::QAR2(I)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • P(B);
      • Vars
        • K(b);S_FLIGHT::QAR1(I)
        • K(b);S_FLIGHT::S(C)
      • Refutation
        • P(a);XP(B)
    • Try
      • P(B);CHECK
      • Refutation
        • P(a);EP,XP(B)
  • Actual
    • Q(I);
    • Vars
      • K(b);S_FLIGHT::QAR1(I)
      • K(b);S_FLIGHT::S(C)
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