MESON Chess Problem Database

Problem Display
PID: 173087 (1N6/2B1pq2/2R5/1p1k1bR1/p2p1n2/6N1/K1Q3rr/2b4B w - - 0 1)

Barulin, Mikhail Mikhailovich

2nd HM., Magyar Sakkvilag, 1927

1N6/2B1pq2/2R5/1p1k1bR1/p2p1n2/6N1/K1Q3rr/2b4B

#2

8 + 11

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Qe6
      • 2.Rc5#
    • 1...Bb2
      • 2.Qe4#
      • 2.Qc5#
    • 1...Bd2
      • 2.Qe4#
      • 2.Qc5#
    • 1...Se2
      • 2.Qe4#
      • 2.Qc5#
    • 1...e5
      • 2.Rd6#
    • 1...e6
      • 2.Rc5#
  • Tries
    • 1.Ka1?
      • threat
        • 2.Qe4#
        • 2.Qa2#
        • 2.Qc5#
      • 1...Rxh1
        • 2.Qe4#
        • 2.Qc5#
      • 1...d3
        • 2.Qc5#
      • 1...Qe6
        • 2.Rc5#
        • 2.Qa2#
        • 2.Qc5#
      • 1...Ba3
        • 2.Qe4#
        • 2.Qa2#
      • 1...Sd3
        • 2.Qa2#
      • 1...Se6
        • 2.Qe4#
        • 2.Qa2#
      • 1...b4
        • 2.Qe4#
        • 2.Qc4#
        • 2.Qc5#
      • 1...e5
        • 2.Rd6#
        • 2.Qa2#
        • 2.Qc5#
      • 1...Bb2+!
    • 1.Bxg2+?
      • 1...Sxg2
        • 2.Qe4#
        • 2.Qc5#
      • 1...Rxg2!
    • 1.Rxf5+?
      • 1...e5
        • 2.Rxe5#
        • 2.Rd6#
      • 1...Qxf5!
  • Keys
    • 1.Kb1!
      • threat
        • 2.Qe4#
      • 1...d3
        • 2.Qc5#
      • 1...Qe6
        • 2.Rc5#
      • 1...Sd3
        • 2.Qa2#
      • 1...e5
        • 2.Rd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • Q(k);SBLOCK::R1(F)
    • P(j);N_GUARD,N_SPINB(i),SBLOCK::R1(F)
    • P(j);SBLOCK::R1(F)
  • Tries
    • Try
      • K(B);N_SPINQ(C),P-FLIGHT
      • Threat
        • DUALS(3)
      • Vars
        • P(e);::QAR1(C)
        • S(f);::QAB(C)
      • Refutation
        • B(a);CHECK
    • Try
      • B(A);CHECK,N_SPINQ(C),XR(b)
      • Refutation
        • R(c);P_PINQ(C),XB(A)
    • Try
      • R(E);CHECK,XB(i)
      • Refutation
        • Q(k);XR(E)
  • Actual
    • K(B);S_FLIGHT
    • Threat
      • QAB1(C)
    • Vars
      • P(e);N_PINQ(C)::QAR1(C)
      • Q(k);SBLOCK::R1(F)
      • S(f);N_PINQ(C)::QAB(C)
      • P(j);N_GUARD,N_SPINB(i),SBLOCK::R1(F)
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Developed and maintained by Brian Stephenson.
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