MESON Chess Problem Database

Problem Display
PID: 214542 (7K/8/8/1p2Np2/p3k3/1p1pNp2/BBQ3P1/3R4 w - - 0 1)

Brenzinger, Francis Eugene

New York Turf, Field and Farm, 1878

7K/8/8/1p2Np2/p3k3/1p1pNp2/BBQ3P1/3R4

#2

8 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...f4
      • 2.Qxd3#
  • Tries
    • 1.Qf2?
      • threat
        • 2.Qxf3#
      • 1...fxg2
        • 2.Qf3#
      • 1...Kf4!
    • 1.Qc6+?
      • 1...Kxe3
        • 2.Qxf3#
      • 1...Kf4!
    • 1.gxf3+?
      • 1...Kxe3
        • 2.Qd2#
      • 1...Kf4!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Qxd3#
      • 1...Kxd5
        • 2.Qc6#
      • 1...bxc2
        • 2.Re1#
        • 2.gxf3#
      • 1...dxc2
        • 2.gxf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(g);SBLOCK::QAB1(D),XP(b)
  • Tries
    • Try
      • Q(D);N_PINP(b)
      • Threat
        • QAB1(D),XP(c)
      • Vars
        • P(c);XP(E)::QAB1(D)
      • Refutation
        • K(e);P-FLIGHT,P_SPINP(c)
    • Try
      • Q(D);CHECK,N_PINP(b)
      • Vars
        • K(e);OGATE,P-FLIGHT,XS(F)::QAR1(D),XP(c)
      • Refutation
        • K(e);P-FLIGHT
    • Try
      • P(E);CHECK,XP(c)
      • Vars
        • K(e);N_SPINP(b),P-FLIGHT,XS(F)::QAB1(D)
      • Refutation
        • K(e);N_SPINP(b),P-FLIGHT
  • Actual
    • S(F);
    • Threat
      • QAB1(D),XP(b)
    • Vars
      • K(e);N_SPINP(b),OGATEB,P_SPINP(a),S_FLIGHT,XS(F)::QAB1(D)
      • P(b);N_SPINP(b),XQ(D)::P(E),XP(c)
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