MESON Chess Problem Database

Problem Display
PID: 223300 (1n6/Q7/np1kP3/5K2/2p1B3/3P4/bP1N4/1q1R2B1 w - - 0 1)

Rosenbaum, Aleksandr

Chess Monthly, 1885

1n6/Q7/np1kP3/5K2/2p1B3/3P4/bP1N4/1q1R2B1

#2

9 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sc5
      • 2.Bh2#
    • 1...Sc7
      • 2.Qa3#
    • 1...Sc6
      • 2.Qd7#
    • 1...Sd7
      • 2.Qxd7#
    • 1...b5
      • 2.Bh2#
  • Tries
    • 1.Kf6?
      • threat
        • 2.Qe7#
      • 1...Sd7+
        • 2.Qxd7#
      • 1...Sc7
        • 2.Qa3#
      • 1...Sc6
        • 2.Qd7#
      • 1...Qxb2+!
  • Keys
    • 1.Ba8!
      • threat
        • 2.Se4#
      • 1...Sc7
        • 2.Qa3#
      • 1...Sc6
        • 2.Qd7#
      • 1...Sd7
        • 2.Qxd7#
      • 1...Sc5
        • 2.Bh2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • S(d);SBLOCK::B(B)
    • S(d);OGATE,SBLOCK::QAB(I)
    • S(g);N_GUARD::QAR1(I)
    • S(g);N_GUARD::QAR1(I),XS(g)
    • P(e);::B(B)
  • Tries
    • Try
      • K(G);P-FLIGHT
      • Threat
        • QAB1(I)
      • Vars
        • S(g);CHECK,N_GUARD::QAR1(I),XS(g)
        • S(d);OGATE,SBLOCK::QAB(I)
        • S(g);N_GUARD::QAR1(I)
      • Refutation
        • Q(a);CHECK,XP(C)
  • Actual
    • B(F);P_SPINP(E)
    • Threat
      • S(D)
    • Vars
      • S(d);OGATE,SBLOCK::QAB(I)
      • S(g);N_GUARD::QAR1(I)
      • S(g);N_GUARD::QAR1(I),XS(g)
      • S(d);SBLOCK::B(B)
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