MESON Chess Problem Database

Problem Display
PID: 172272 (8/4pr2/7B/2K1k3/Q5P1/8/8/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Twoja sudba, 1996

8/4pr2/7B/2K1k3/Q5P1/8/8/8

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...e6
      • 2.Qd4#
  • Tries
    • 1.Qe4+?
      • 1...Kf6
        • 2.Qf5#
        • 2.g5#
      • 1...Kxe4!
  • Keys
    • 1.Qd7!
      • 1...Ke4
        • 2.Qd5#
      • 1...Kf6
        • 2.Qf5#
      • 1...Rf1
        • 2.Qxe7#
      • 1...Rf2
        • 2.Qxe7#
      • 1...Rf3
        • 2.Qxe7#
      • 1...Rf4
        • 2.Qxe7#
      • 1...Rf5
        • 2.Qxf5#
        • 2.Qxe7#
      • 1...Rf6
        • 2.Qd5#
      • 1...Rg7
        • 2.Qf5#
      • 1...Rh7
        • 2.Qf5#
      • 1...Rf8
        • 2.Qxe7#
      • 1...e6
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • P(b);SBLOCK::QAB1(A)
  • Tries
    • Try
      • Q(A);CHECK
      • Refutation
        • K(a);P-FLIGHT,XQ(A)
  • Actual
    • Q(A);
    • Vars
      • K(a);P-FLIGHT::QAB1(A)
      • K(a);S_FLIGHT::QAR1(A)
      • R(c);N_GUARD::QAR2(A),XP(b)
      • R(c);SBLOCK::QAR1(A)
      • R(c);N_GUARD::QAR1(A)
      • P(b);SBLOCK::QAB1(A)
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