MESON Chess Problem Database

Problem Display
PID: 130 (4bb2/p5r1/QP3NP1/2k2N2/2P4R/P5P1/1r3P1K/6BB w - - 0 1)

Barulin, Mikhail Mikhailovich

1st Prize, Ukraine Skaksekt., 1930

4bb2/p5r1/QP3NP1/2k2N2/2P4R/P5P1/1r3P1K/6BB

#2

13 + 6

3098 FIDE Album (1914-1944) (I) 1971

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf2+
      • 2.Bxf2#
    • 1...Rb4
      • 2.f4#
    • 1...Rxb6
      • 2.f4#
    • 1...Bf7
      • 2.Sd7#
  • Keys
    • 1.b7!
      • threat
        • 2.Se4#
      • 1...Rxf2+
        • 2.Bxf2#
      • 1...Re2
        • 2.Qxa7#
      • 1...Rb5
        • 2.f3#
      • 1...Rb6
        • 2.f4#
      • 1...Re7
        • 2.Qd6#
      • 1...Bb5
        • 2.Qxa7#
      • 1...Bc6
        • 2.Qxc6#

This is a version of 92214

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • R(a);CHECK,OGATE,P_SPINR(a),XP(C)::B(A),XR(a)
    • R(a);N_PINP(C)::B(A)+P(C)
    • R(a);N_PINP(C),XP(K)::B(A)+P(C)
    • B(e);N_GUARD,S_CUTR(d)::S(L)
  • Actual
    • P(K);
    • Threat
      • S(L)
    • Vars
      • R(a);CHECK,OGATE,P_SPINR(a),XP(C)::B(A),XR(a)
      • R(a);N_GUARD::QAB(J),XP(c)
      • R(a);N_PINP(C)::B(A)+P(C)
      • R(d);S_CUTB(f)::QAB1(J)
      • B(e);S_CUTR(a)::QAB(J),XP(c)
      • B(e);N_GUARD::QAR1(J),XB(e)
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