MESON Chess Problem Database

Problem Display
PID: 134785 (8/2Q2Ppk/8/6P1/5K2/8/8/8 w - - 0 1)

Pilipenko, Viktor

7th Comm.=, Bron MT, 1998

8/2Q2Ppk/8/6P1/5K2/8/8/8

#2

4 + 2

133 The Problemist Supplement 2009

SOLUTION

  • SOUND
  • Sets
    • 1...g6
      • 2.f8Q#
      • 2.f8R#
  • Tries
    • 1.Ke3?
      • 1...Kh8
        • 2.Qh2#
      • 1...g6
        • 2.f8Q#
        • 2.f8R#
      • 1...Kg6!
    • 1.Kf3?
      • 1...Kh8
        • 2.Qh2#
      • 1...g6
        • 2.f8Q#
        • 2.f8R#
      • 1...Kg6!
    • 1.Ke4?
      • 1...Kh8
        • 2.Qh2#
      • 1...g6
        • 2.f8Q#
        • 2.f8R#
      • 1...Kg6!
    • 1.Kf5?
      • threat
        • 2.Qh2#
      • 1...Kh8
        • 2.Qh2#
      • 1...g6+!
    • 1.Qb8?
      • 1...g6
        • 2.Qg8#
      • 1...Kg6!
    • 1.Qd8?
      • 1...g6
        • 2.Qg8#
      • 1...Kg6!
    • 1.Qc2+?
      • 1...Kh8
        • 2.Qh2#
        • 2.f8Q#
        • 2.f8R#
      • 1...g6!
    • 1.Qc6?
      • 1...Kh8
        • 2.Qh1#
      • 1...g6!
    • 1.Qb7?
      • 1...Kh8
        • 2.Qh1#
      • 1...g6
        • 2.f8Q#
        • 2.f8R#
      • 1...Kg6!
    • 1.Qd7?
      • 1...Kh8
        • 2.Qh3#
      • 1...g6
        • 2.f8Q#
        • 2.f8R#
      • 1...Kg6!
    • 1.Qc8?
      • 1...g6
        • 2.Qg8#
      • 1...Kg6!
    • 1.f8B?
      • threat
        • 2.Qxg7#
      • 1...Kg8
        • 2.Qxg7#
      • 1...Kh8
        • 2.Qxg7#
      • 1...Kg6!
  • Keys
    • 1.Kg4!
      • 1...Kg6
        • 2.f8S#
      • 1...Kh8
        • 2.Qh2#
      • 1...g6
        • 2.f8Q#
        • 2.f8R#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • P(a);SBLOCK::P=Q
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Vars
        • K(b);P-FLIGHT::QAR(C)
        • P(a);SBLOCK::P=Q
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(b);P-FLIGHT::QAR(C)
        • P(a);SBLOCK::P=Q
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • K(A);P-FLIGHT
      • Vars
        • K(b);P-FLIGHT::QAR(C)
        • P(a);SBLOCK::P=Q
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • K(A);P-FLIGHT
      • Threat
        • QAR(C)
      • Vars
        • K(b);P-FLIGHT::QAR(C)
      • Refutation
        • P(a);CHECK
    • Try
      • Q(C);
      • Vars
        • P(a);::QAB1(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • P(a);::QAB1(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Refutation
        • P(a);P_SPINP(a)
    • Try
      • Q(C);
      • Vars
        • K(b);P-FLIGHT::QAB(C)
      • Refutation
        • P(a);
    • Try
      • Q(C);
      • Vars
        • K(b);P-FLIGHT::QAB(C)
        • P(a);SBLOCK::P=Q
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • K(b);P-FLIGHT::QAR(C)
        • P(a);SBLOCK::P=Q
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(C);
      • Vars
        • P(a);::QAB1(C)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • P(D);P_PINP(a)
      • Threat
        • QAR1(C),XP(a)
      • Vars
        • K(b);N_SPINP(a),S_FLIGHT::QAR1(C),XP(a)
        • K(b);N_SPINP(a),P-FLIGHT::QAB1(C),XP(a)
      • Refutation
        • K(b);N_SPINP(a),S_FLIGHT
  • Actual
    • K(A);P-FLIGHT
    • Vars
      • K(b);S_FLIGHT::P=S
      • K(b);P-FLIGHT::QAR(C)
      • P(a);SBLOCK::P=Q
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