MESON Chess Problem Database

Problem Display
PID: 172383 (8/8/8/4K3/6p1/6kb/4Q3/3BR3 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kuban segodniya, 1997

8/8/8/4K3/6p1/6kb/4Q3/3BR3

#2

4 + 3

6490 yacpdb 2018
5454 Near Snap 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Qxg4+?
      • 1...Kf2
        • 2.Qg1#
      • 1...Kh2
        • 2.Qg1#
      • 1...Bxg4!
    • 1.Qe3+?
      • 1...Kg2
        • 2.Qg1#
      • 1...Kh2
        • 2.Qg1#
      • 1...Kh4!
  • Keys
    • 1.Rh1!
      • 1...Kh4
        • 2.Qxg4#
      • 1...Bf1
        • 2.Qh2#
      • 1...Bg2
        • 2.Qe1#

Anticipated by 171320(1994)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);CHECK,XP(c)
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(C)
      • Refutation
        • B(b);XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • K(a);P-FLIGHT::QAR1(C)
        • K(a);S_FLIGHT::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • R(B);
    • Vars
      • K(a);P_SPINB(b),S_FLIGHT::QAR1(C),XP(c)
      • B(b);::QAB1(C)
      • B(b);SBLOCK::QAB(C)
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