MESON Chess Problem Database

Problem Display
PID: 172520 (8/3Q4/8/pp6/1k6/1p6/2R5/2K5 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kuban segodniya, 2002

8/3Q4/8/pp6/1k6/1p6/2R5/2K5

#2

3 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qxb5+?
      • 1...Ka3
        • 2.Qxa5#
      • 1...Kxb5!
    • 1.Qd2+?
      • 1...Ka3
        • 2.Qxa5#
      • 1...Ka4!
  • Keys
    • 1.Kb2!
      • threat
        • 2.Qg4#
        • 2.Qd4#
      • 1...Ka4
        • 2.Rc4#
      • 1...bxc2
        • 2.Qd4#
      • 1...a4
        • 2.Qd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(C);CHECK,XP(d)
      • Vars
        • K(b);S_FLIGHT::QAR2(C),XP(c)
      • Refutation
        • K(b);P-FLIGHT,XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT::QAR2(C),XP(c)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • K(A);S_FLIGHT
    • Threat
      • DUALS(2)
    • Vars
      • K(b);P-FLIGHT,P_SPINP(d)::R(B)
      • P(a);XR(B)::QAR2(C)
      • P(c);SBLOCK::QAB(C)
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