MESON Chess Problem Database

Problem Display
PID: 171447 (4b3/8/8/Q2p4/2Pk1K2/8/1N6/8 w - - 0 1)

Antipov, Viacheslav Pavlovich

Shakh-M (Borovich), 1998

4b3/8/8/Q2p4/2Pk1K2/8/1N6/8

#2

4 + 3

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...dxc4
      • 2.Qe5#
  • Tries
    • 1.Qe1?
      • threat
        • 2.Qe3#
      • 1...dxc4
        • 2.Qe5#
      • 1...Kc5!
  • Keys
    • 1.Qb4!
      • threat
        • 2.c5#
      • 1...dxc4
        • 2.Qxc4#
      • 1...Bb5
        • 2.cxb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(b);OGATE,XP(B)::QAB1(D)
  • Tries
    • Try
      • Q(D);
      • Threat
        • QAB1(D)
      • Vars
        • P(b);XP(B)::QAB1(D)
      • Refutation
        • K(a);S_FLIGHT
  • Actual
    • Q(D);
    • Threat
      • QAR(D)+P(B)
    • Vars
      • P(b);OGATE,P_SPINP(b),XP(B)::QAR1(D),XP(b)
      • B(c);OGATE::QAR(D)+P(B),XB(c)
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