MESON Chess Problem Database

Problem Display
PID: 171347 (5K2/8/2p1pk2/2Q5/7N/8/8/8 w - - 0 1)

Antipov, Viacheslav Pavlovich

Smena, 1995

5K2/8/2p1pk2/2Q5/7N/8/8/8

#2

3 + 3

5454 Near Snap 2018
6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...e5
      • 2.Qe7#
  • Tries
    • 1.Ke8?
      • 1...e5
        • 2.Qe7#
      • 1...Kg7!
    • 1.Qg1?
      • threat
        • 2.Qg7#
      • 1...e5
        • 2.Qg6#
      • 1...Ke5!
    • 1.Qc1?
      • threat
        • 2.Qf4#
      • 1...e5
        • 2.Qh6#
      • 1...Ke5!
    • 1.Qh5?
      • 1...e5
        • 2.Qg6#
        • 2.Qf5#
        • 2.Qh6#
      • 1...c5!
  • Keys
    • 1.Qe3!
      • threat
        • 2.Qf4#
      • 1...e5
        • 2.Qh6#

Anticipated by 234511(1962), 15365(1982)

FEATURES

  • Static
    • TYPE = BLOCK_THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • P(b);::QAB1(B)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Vars
        • P(b);::QAB1(B)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAB1(B)
      • Vars
        • P(b);SBLOCK::QAR1(B)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(B);
      • Threat
        • QAR2(B)
      • Vars
        • P(b);SBLOCK::QAR2(B)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(B);
      • Refutation
        • P(a);
  • Actual
    • Q(B);
    • Threat
      • QAR2(B)
    • Vars
      • P(b);SBLOCK::QAR2(B)
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