MESON Chess Problem Database

Problem Display
PID: 254956 (B4b2/B7/2r1r3/2P2p2/2Q1p3/3Pk1P1/4P3/4K3 w - - 0 1)

Tkachenko, Sergiy Ivanovich

The Problemist, 2021

B4b2/B7/2r1r3/2P2p2/2Q1p3/3Pk1P1/4P3/4K3

#2

8 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Rcd6
      • 2.cxd6#
    • 1...exd3
      • 2.Qxd3#
      • 2.Qf4#
  • Tries
    • 1.dxe4?
      • threat
        • 2.Qd3#
      • 1...fxe4
        • 2.Qc3#
      • 1...Rcd6
        • 2.cxd6#
      • 1...Red6!
  • Keys
    • 1.Qc3!
      • threat
        • 2.d4#
      • 1...Rxc5
        • 2.dxe4#
      • 1...exd3
        • 2.Qxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(d);OGATE::B(G)+P(F),XR(d)
  • Tries
    • Try
      • P(C);XP(b)
      • Threat
        • QAR1(E)
      • Vars
        • P(c);SBLOCK,XP(C)::QAR2(E)
        • R(d);OGATE::B(G)+P(F),XR(d)
      • Refutation
        • R(e);
  • Actual
    • Q(E);
    • Threat
      • QAR(E)+P(C)
    • Vars
      • R(d);P_SPINR(d),XP(F)::QAR(E)+P(C),XP(b)
      • P(b);OGATE,P_SPINP(b),XP(C)::QAR1(E),XP(b)
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