MESON Chess Problem Database

Problem Display
PID: 172482 (1n2B3/8/1r2k1K1/N1Q5/8/8/8/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kuban segodniya, 2001

1n2B3/8/1r2k1K1/N1Q5/8/8/8/8

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Sd7
      • 2.Bf7#
  • Tries
    • 1.Sb7?
      • threat
        • 2.Sd8#
      • 1...Rd6
        • 2.Qxd6#
      • 1...Sc6
        • 2.Qd6#
      • 1...Rxb7!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Qe5#
      • 1...Rb5
        • 2.Qd6#
      • 1...Sc6
        • 2.Qd6#
      • 1...Sd7
        • 2.Bf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(c);SBLOCK::B(D)
  • Tries
    • Try
      • S(A);
      • Threat
        • S(A)
      • Vars
        • R(a);N_GUARD::QAR1(B),XR(a)
        • S(c);S_CUTR(a)::QAR1(B)
      • Refutation
        • R(a);XS(A)
  • Actual
    • S(A);
    • Threat
      • QAR1(B)
    • Vars
      • R(a);N_GUARD::QAR1(B)
      • S(c);S_CUTR(a)::QAR1(B)
      • S(c);SBLOCK::B(D)
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