MESON Chess Problem Database

Problem Display
PID: 172451 (1b1Q4/3R4/pp6/1k6/8/K7/8/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kuban segodniya, 1997

1b1Q4/3R4/pp6/1k6/8/K7/8/8

#2

3 + 4

5454 Near Snap 2018
6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Ka5
      • 2.Rd5#
  • Tries
    • 1.Rd5+?
      • 1...Kc6
        • 2.Qd7#
      • 1...Kc4!
    • 1.Qxb6+?
      • 1...Kc4
        • 2.Qb4#
        • 2.Qc6#
      • 1...Kxb6!
  • Keys
    • 1.Rc7!
      • threat
        • 2.Qg5#
        • 2.Qd5#
      • 1...Ka5
        • 2.Rc5#
      • 1...Bxc7
        • 2.Qd5#
      • 1...a5
        • 2.Qd3#

Anticipated by 182249(1906)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(a);P-FLIGHT,P_SPINP(c)::R(B)
  • Tries
    • Try
      • R(B);CHECK
      • Vars
        • K(a);S_FLIGHT::QAB1(C)
      • Refutation
        • K(a);S_FLIGHT
    • Try
      • Q(C);CHECK,XP(c)
      • Refutation
        • K(a);P-FLIGHT,XQ(C)
  • Actual
    • R(B);
    • Threat
      • DUALS(2)
    • Vars
      • K(a);P-FLIGHT::R(B)
      • B(d);XR(B)::QAR2(C)
      • P(b);SBLOCK::QAB(C)
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