MESON Chess Problem Database

Problem Display
PID: 232887 (1q4nb/7Q/1npr1k2/1pN5/2b2p1P/3PR3/1R4P1/B6K w - - 0 1)

Morra, Juan Carlos

Il Due Mosse, 1958

1q4nb/7Q/1npr1k2/1pN5/2b2p1P/3PR3/1R4P1/B6K

#2

9 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Re6#
    • 1...Bd5
      • 2.Rb1#
      • 2.Ra2#
      • 2.Rc2#
      • 2.Rd2#
      • 2.Rbe2#
      • 2.Rf2#
      • 2.Rb3#
      • 2.Rb4#
      • 2.Rxb5#
    • 1...fxe3
      • 2.Rf2#
  • Keys
    • 1.g4!
      • threat
        • 2.g5#
      • 1...Bd5+
        • 2.Rg2#
      • 1...fxe3
        • 2.Rf2#
      • 1...fxg4 ep
        • 2.Rf2#
      • 1...Bg7
        • 2.Qf5#
      • 1...Rd5
        • 2.Re6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • R(f);N_GUARD,S_CUTB(a)::R1(F)
    • P(b);XR(F)::B(A)+R(C),DCHECK
  • Actual
    • P(D);
    • Threat
      • P(D)
    • Vars
      • B(a);CHECK,S_CUTR(f)::B(A)+R(C)
      • P(b);XR(F)::B(A)+R(C),DCHECK
      • P(b);EP,XP(D)::B(A)+R(C),DCHECK
      • B(j);SBLOCK::QAR1(I)
      • R(f);N_GUARD,S_CUTB(a)::R1(F)
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