MESON Chess Problem Database

Problem Display
PID: 259753 (8/4R2K/p5Rp/r4k1p/r7/4bP2/4P3/7Q w - - 0 1)

Kabakov, A

3rd HM., Uzbek Replublic 02. Ty., 1951

8/4R2K/p5Rp/r4k1p/r7/4bP2/4P3/7Q

#2

6 + 7

15239 Valois Notebooks 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Rf4
      • 2.Qxh5#
    • 1...Re5
      • 2.Rf7#
    • 1...Bf4
      • 2.Qh3#
  • Tries
    • 1.Qb1+?
      • 1...Re4
        • 2.Qxe4#
      • 1...Kf4!
    • 1.Qh2?
      • threat
        • 2.Rf7#
      • 1...Rf4
        • 2.Qxh5#
      • 1...Bd4
        • 2.e4#
      • 1...Bf4
        • 2.Qh3#
      • 1...Bg5!
    • 1.Qxh5+?
      • 1...Kf4
        • 2.Rg4#
        • 2.Qg4#
      • 1...Bg5!
  • Keys
    • 1.f4!
      • threat
        • 2.Rf7#
      • 1...Kxf4
        • 2.Qf3#
      • 1...Rxf4
        • 2.Qxh5#
      • 1...Bxf4
        • 2.Qh3#
      • 1...Bd4
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(b);SBLOCK,S_CUTB(a)::QAR2(A),XP(e)
    • R(c);SBLOCK::R(E)
    • B(a);SBLOCK,S_CUTR(b)::QAB(A)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::QAB1(A),XR(b)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • R(E)
      • Vars
        • R(b);SBLOCK,S_CUTB(a)::QAR2(A),XP(e)
        • B(a);OGATE::P(B)
        • B(a);SBLOCK,S_CUTR(b)::QAB(A)
      • Refutation
        • B(a);
    • Try
      • Q(A);CHECK,XP(e)
      • Refutation
        • B(a);P_SPINB(a)
  • Actual
    • P(C);
    • Threat
      • R(E)
    • Vars
      • K(d);OGATEB,P-FLIGHT,XP(C)::QAR1(A)
      • R(b);SBLOCK,XP(C)::QAR2(A),XP(e)
      • B(a);SBLOCK,XP(C)::QAB(A)
      • B(a);S_CUTR(b)::QAB1(A)
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