MESON Chess Problem Database

Problem Display
PID: 172211 (8/3KR3/3ppk2/3r4/6Q1/8/8/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kuban segodniya, 1996

8/3KR3/3ppk2/3r4/6Q1/8/8/8

#2

3 + 4

5454 Near Snap 2018
6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Rxe6#
    • 1...Rf5
      • 2.Qg7#
    • 1...Rg5
      • 2.Qxe6#
  • Tries
    • 1.Rf7+?
      • 1...Ke5
        • 2.Qf4#
      • 1...Kxf7!
  • Keys
    • 1.Ke8!
      • threat
        • 2.Rxe6#
      • 1...Ke5
        • 2.Rxe6#
      • 1...Rg5
        • 2.Qxe6#
      • 1...Re5
        • 2.Rf7#
      • 1...Rf5
        • 2.Qg7#
      • 1...e5
        • 2.Re6#
        • 2.Rf7#

Anticipated by 19319(1939), 17560(1947)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(d);P_SPINP(c),S_FLIGHT::R1(C),XP(c)
    • R(a);SBLOCK::QAB1(A)
    • R(a);SBLOCK::QAR1(A),XP(c)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • K(d);S_FLIGHT::QAB1(A)
      • Refutation
        • K(d);P-FLIGHT,XR(C)
  • Actual
    • K(B);S_FLIGHT
    • Threat
      • R1(C),XP(c)
    • Vars
      • K(d);P_SPINP(c),S_FLIGHT::R1(C),XP(c)
      • R(a);SBLOCK::QAR1(A),XP(c)
      • R(a);SBLOCK::R1(C)
      • R(a);SBLOCK::QAB1(A)
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