MESON Chess Problem Database

Problem Display
PID: 87751 (3N1r2/1K2PP2/6N1/RB1Qrk2/1p1P3B/q3pbPP/8/4nR2 w - - 0 1)

Ryabtsev, Volodimir Grigorovich

Uralski Problemist, 2001

3N1r2/1K2PP2/6N1/RB1Qrk2/1p1P3B/q3pbPP/8/4nR2

#2

13 + 8

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.exf8S?
      • threat
        • 2.Se7#
        • 2.Bd7#
        • 2.g4#
      • 1...Qa4
        • 2.Se7#
        • 2.g4#
      • 1...b3
        • 2.Bd7#
        • 2.g4#
      • 1...Rxd5!
  • Keys
    • 1.Qc6!
      • threat
        • 2.g4#
      • 1...Rxb5+
        • 2.Rxb5#
      • 1...Rxe7+
        • 2.Sxe7#
      • 1...Rd5
        • 2.Qe6#
      • 1...Re6
        • 2.Bd3#
      • 1...Re4
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • P(K);XR(h)
      • Threat
        • DUALS(3)
      • Refutation
        • R(f);N_SPINR(f),XQ(H)
  • Actual
    • Q(H);N_PINR(f)
    • Threat
      • P(B)
    • Vars
      • R(f);CHECK,OGATE,P_SPINR(f),XB(G)::R(F),XR(f)
      • R(f);CHECK,XP(K)::S(I),XR(f)
      • R(f);N_PINQ(H)::QAB1(H)
      • R(f);::R(F)+B(G),DCHECK
      • R(f);N_PINQ(H),SBLOCK::QAR1(H)
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