MESON Chess Problem Database

Problem Display
PID: 202417 (1K6/8/kpp5/r7/N7/N1P5/6B1/Q7 w - - 0 1)

Mendes de Moraes Filho, Feliciano

1st Prize, O Imparcial, 1923

1K6/8/kpp5/r7/N7/N1P5/6B1/Q7

#2

6 + 4

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...c5
      • 2.Bb7#
  • Keys
    • 1.Sb5!
      • threat
        • 2.Sc7#
      • 1...Kxb5
        • 2.Bf1#
      • 1...Rxa4
        • 2.Qxa4#
      • 1...Rxb5
        • 2.Sc5#
      • 1...cxb5
        • 2.Bb7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • P(d);OGATE::B(B)
  • Actual
    • S(C);
    • Threat
      • S(C)
    • Vars
      • K(b);OGATEB,S_FLIGHT,XS(C)::B(B)
      • R(a);OGATE,P_SPINR(a),XS(E)::QAR2(A),XR(a)
      • R(a);SBLOCK,XS(C)::QAR(A)+S(E),DCHECK
      • P(d);OGATE,SBLOCK,XS(C)::B(B)
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