MESON Chess Problem Database

Problem Display
PID: 107876 (8/1N4Q1/K1p1k3/8/B3p3/8/5r2/3R4 w - - 0 1)

Carvajal, Juan

El Ajedrez Espanol, 1963

8/1N4Q1/K1p1k3/8/B3p3/8/5r2/3R4

#2

5 + 4

6490 yacpdb 2009
5454 Near Snap 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rf5
      • 2.Sd8#
      • 2.Rd6#
    • 1...c5
      • 2.Bd7#
  • Keys
    • 1.Rd5!
      • threat
        • 2.Re5#
      • 1...Kxd5
        • 2.Bb3#
      • 1...cxd5
        • 2.Bd7#
      • 1...Rf7
        • 2.Qe5#
      • 1...Rf5
        • 2.Rd6#
      • 1...Rf6
        • 2.Qd7#

Anticipated by 23426(1886), 158655(1906-1907), 93234(1907)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 1
  • Sets
    • P(c);OGATE::B(B)
  • Actual
    • R(A);
    • Threat
      • R1(A)
    • Vars
      • K(d);OGATEB,S_FLIGHT,XR(A)::B(B)
      • P(c);OGATE,SBLOCK,XR(A)::B(B)
      • R(a);SBLOCK::QAR1(E)
      • R(a);SBLOCK::R1(A)
      • R(a);SBLOCK::QAB1(E)
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