MESON Chess Problem Database

Problem Display
PID: 172489 (1n6/6Q1/5R2/6pp/6k1/8/7K/8 w - - 0 1)

Andreev, Aleksandr Grigorevich

Kuban segodniya, 2001

1n6/6Q1/5R2/6pp/6k1/8/7K/8

#2

3 + 4

6490 yacpdb 2018
5454 Near Snap 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Rf5?
      • threat
        • 2.Qxg5#
      • 1...Kh4
        • 2.Qxg5#
      • 1...Kxf5!
    • 1.Qc7?
      • threat
        • 2.Qg3#
        • 2.Qc4#
      • 1...Kh4
        • 2.Qg3#
      • 1...Sc6
        • 2.Qg3#
      • 1...h4!
    • 1.Qd7+?
      • 1...Kh4
        • 2.Qh3#
      • 1...Sxd7!
  • Keys
    • 1.Qe7!
      • threat
        • 2.Qb4#
        • 2.Qe4#
      • 1...Kh4
        • 2.Rf4#
      • 1...Sc6
        • 2.Qe4#
      • 1...Sa6
        • 2.Qe4#
      • 1...h4
        • 2.Qe2#

Anticipated by 151582(0000)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);
      • Threat
        • QAR1(C),XP(b)
      • Vars
        • K(a);N_SPINP(b),P-FLIGHT::QAB1(C),XP(b)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT,XR(B)
    • Try
      • Q(C);N_PINP(b)
      • Threat
        • DUALS(2)
      • Vars
        • K(a);P-FLIGHT::QAB1(C)
        • S(d);::QAR1(C)
      • Refutation
        • P(c);
    • Try
      • Q(C);CHECK,N_PINP(b)
      • Vars
        • K(a);OGATE,P-FLIGHT::QAR1(C)
      • Refutation
        • S(d);XQ(C)
  • Actual
    • Q(C);N_PINP(b)
    • Threat
      • DUALS(2)
    • Vars
      • K(a);P-FLIGHT::R(B)
      • S(d);::QAR2(C)
      • P(c);SBLOCK::QAB(C)
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