MESON Chess Problem Database

Problem Display
PID: 172418 (8/2Q5/4p3/3k4/4b1R1/2K1p3/8/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kuban segodniya, 1997

8/2Q5/4p3/3k4/4b1R1/2K1p3/8/8

#2

3 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bb1
      • 2.Rd4#
    • 1...Bh1
      • 2.Rd4#
    • 1...Bc2
      • 2.Rd4#
    • 1...Bg2
      • 2.Rd4#
    • 1...Bd3
      • 2.Rd4#
    • 1...Bf3
      • 2.Rd4#
    • 1...Bf5
      • 2.Rd4#
    • 1...Bg6
      • 2.Rd4#
    • 1...Bh7
      • 2.Rd4#
  • Tries
    • 1.Rxe4?
      • threat
        • 2.Rd4#
        • 2.Re5#
      • 1...e5
        • 2.Rxe5#
      • 1...Kxe4!
    • 1.Rg5+?
      • 1...e5
        • 2.Rxe5#
      • 1...Bf5!
  • Keys
    • 1.Kb4!
      • threat
        • 2.Qc5#
      • 1...Kd4
        • 2.Qd6#
      • 1...e5
        • 2.Qd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 9
  • Sets
    • B(b);OGATE::R1(B)
  • Tries
    • Try
      • R(B);XB(b)
      • Threat
        • DUALS(2)
      • Vars
        • P(d);::R1(B),XP(d)
      • Refutation
        • K(c);S_FLIGHT,XR(B)
    • Try
      • R(B);CHECK
      • Vars
        • P(d);P_SPINP(d)::R1(B),XP(d)
      • Refutation
        • B(b);P_SPINB(b)
  • Actual
    • K(A);S_FLIGHT
    • Threat
      • QAR1(C)
    • Vars
      • K(c);P-FLIGHT,P_SPINB(b)::QAR2(C)
      • P(d);SBLOCK::QAR2(C)
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