MESON Chess Problem Database

Problem Display
PID: 15915 (8/1pK1p2B/1N2k3/2p1PR2/1p4p1/1P1n4/Q7/8 w - - 0 1)

Rychkov, Vladimir Nikolaevich

HM., Magadanskaya Pravda, 1989

8/1pK1p2B/1N2k3/2p1PR2/1p4p1/1P1n4/Q7/8

#2

7 + 7

5454 Near Snap 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Qc2?
      • threat
        • 2.Qc4#
      • 1...Sb2
        • 2.Bg8#
      • 1...Sf4
        • 2.Bg8#
      • 1...c4
        • 2.Qxc4#
      • 1...Sxe5!
    • 1.Qh2?
      • threat
        • 2.Qh6#
      • 1...Sxe5
        • 2.Qxe5#
      • 1...Sf4!
  • Keys
    • 1.Qd2!
      • threat
        • 2.Qh6#
      • 1...Sxe5
        • 2.Qd5#
      • 1...Sf4
        • 2.Qd7#

This anticipates 60456(2001)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB(A)
      • Vars
        • S(a);::B(G)
        • P(d);::QAB(A),XP(d)
      • Refutation
        • S(a);XP(C)
    • Try
      • Q(A);
      • Threat
        • QAR(A)
      • Vars
        • S(a);OGATE,XP(C)::QAR1(A),XS(a)
      • Refutation
        • S(a);
  • Actual
    • Q(A);
    • Threat
      • QAR(A)
    • Vars
      • S(a);OGATE,XP(C)::QAB1(A)
      • S(a);OGATE::QAB1(A)
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