MESON Chess Problem Database

Problem Display
PID: 189355 (8/8/4N3/1Q3p2/1KNP2b1/Ppp5/2k1P2R/Bn2R3 w - - 0 1)

Barulin, Mikhail Mikhailovich

3rd Prize, Trud, 1927

8/8/4N3/1Q3p2/1KNP2b1/Ppp5/2k1P2R/Bn2R3

#2

10 + 6

16265 The Two-move Chess Problem in the Soviet Union 1923-1943 1943

SOLUTION

  • SOUND
  • Sets
    • 1...Bxe2
      • 2.Qxf5#
    • 1...Bh5
      • 2.Qxf5#
    • 1...Sd2
      • 2.Se3#
    • 1...b2
      • 2.Qa4#
  • Tries
    • 1.Bb2?
      • threat
        • 2.Rc1#
      • 1...Bxe2
        • 2.Qxf5#
      • 1...cxb2!
    • 1.Rhh1?
      • threat
        • 2.Rc1#
      • 1...b2
        • 2.Qa4#
      • 1...Bxe2!
    • 1.Qa4?
      • threat
        • 2.Qxb3#
      • 1...Sd2
        • 2.Se3#
      • 1...Bxe2!
    • 1.e3+?
      • 1...Kd3
        • 2.Sd6#
        • 2.Sc5#
      • 1...Be2
        • 2.Qxf5#
      • 1...Sd2!
    • 1.e4+?
      • 1...Kd3
        • 2.Sb2#
        • 2.Sa5#
        • 2.Se5#
        • 2.Sb6#
        • 2.Sd6#
        • 2.Re3#
      • 1...Sd2
        • 2.Se3#
      • 1...Be2!
  • Keys
    • 1.Ka4!
      • threat
        • 2.Qxb3#
      • 1...Bxe2
        • 2.Qxf5#
      • 1...Sd2
        • 2.Se3#
      • 1...b2
        • 2.Qb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • B(e);N_GUARD,P_SPINB(e),XP(C)::QAB(I),XP(f)
    • B(e);N_GUARD::QAB(I),XP(f)
    • S(a);SBLOCK::S(G)
    • P(c);OGATEB::QAB(I)
  • Tries
    • Try
      • B(A);
      • Threat
        • R1(B)
      • Vars
        • B(e);N_GUARD,P_SPINB(e),XP(C)::QAB(I),XP(f)
      • Refutation
        • P(d);XB(A)
    • Try
      • R(D);
      • Threat
        • R1(B)
      • Vars
        • P(c);OGATEB::QAB(I)
      • Refutation
        • B(e);XP(C)
    • Try
      • Q(I);P_PINP(c)
      • Threat
        • QAB1(I),XP(c)
      • Vars
        • S(a);SBLOCK::S(G)
      • Refutation
        • B(e);P_SPINB(e),XP(C)
    • Try
      • P(C);CHECK
      • Vars
        • B(e);P_SPINB(e)::QAB(I),XP(f)
      • Refutation
        • S(a);P_SPINS(a)
    • Try
      • P(C);CHECK
      • Vars
        • S(a);P_SPINS(a)::S(G)
      • Refutation
        • B(e);P_SPINB(e)
  • Actual
    • K(F);P-FLIGHT
    • Threat
      • QAB1(I),XP(c)
    • Vars
      • B(e);N_GUARD,P_SPINB(e),XP(C)::QAB(I),XP(f)
      • S(a);SBLOCK::S(G)
      • P(c);::QAB1(I)
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