MESON Chess Problem Database

Problem Display
PID: 17027 (B4R2/6p1/8/7Q/1q6/6k1/pr6/Kn4Bb w - - 0 1)

Umnov, Evgeny Ivanovich

Shakhmaty v SSSR, 1945

B4R2/6p1/8/7Q/1q6/6k1/pr6/Kn4Bb

#2

5 + 7

3147 Chess Problems: Introduction to an Art 1963
3105 FIDE Album (1945-1955) 1964
3310 2345 Chess Problems 1997
56 The Problemist 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Rf2
      • 2.Bxf2#
    • 1...Rg2
      • 2.Rf3#
    • 1...Rh2
      • 2.Bxh2#
    • 1...Rb3
      • 2.Bf2#
      • 2.Bh2#
    • 1...Bg2
      • 2.Bh2#
    • 1...Sd2
      • 2.Bf2#
      • 2.Bh2#
  • Tries
    • 1.Rf3+?
      • 1...Kg2
        • 2.Qh2#
      • 1...Bxf3!
  • Keys
    • 1.Bg2!
      • threat
        • 2.Qh3#
      • 1...Kxg2
        • 2.Qh2#
      • 1...Qxf8
        • 2.Qg5#
      • 1...Rxg2
        • 2.Rf3#
      • 1...Bxg2
        • 2.Bh2#
      • 1...Qg4
        • 2.Qh2#
      • 1...Qh4
        • 2.Qf3#

There are these versions: 146511

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • R(d);N_GUARD::B(B),XR(d)
    • R(d);SBLOCK,S_CUTB(b)::R1(E)
    • B(b);S_CUTR(d)::B(B)
  • Tries
    • Try
      • R(E);CHECK
      • Vars
        • K(e);P-FLIGHT::QAR1(C)
      • Refutation
        • B(b);XR(E)
  • Actual
    • B(D);
    • Threat
      • QAR1(C)
    • Vars
      • K(e);P-FLIGHT,XB(D)::QAR1(C)
      • Q(f);N_GUARD,XR(E)::QAR2(C)
      • R(d);SBLOCK,XB(D)::R1(E)
      • B(b);SBLOCK,XB(D)::B(B)
      • Q(f);SBLOCK::QAB1(C)
      • Q(f);SBLOCK::QAR1(C)
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