MESON Chess Problem Database

Problem Display
PID: 246663 (1KN1k3/4Pp2/1N1B2p1/1R6/B6r/5p2/2bnR3/r6Q w - - 0 1)

Morra, Juan Carlos

El Ajedrez Espanol, 1961

1KN1k3/4Pp2/1N1B2p1/1R6/B6r/5p2/2bnR3/r6Q

#2

9 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rxa4
      • 2.Qh8#
    • 1...Rb4
      • 2.Qh8#
    • 1...Rc4
      • 2.Qh8#
    • 1...Rd4
      • 2.Qh8#
    • 1...Re4
      • 2.Qh8#
    • 1...Rf4
      • 2.Qh8#
    • 1...Rg4
      • 2.Qh8#
    • 1...Rh8
      • 2.Qxh8#
    • 1...fxe2
      • 2.Qc6#
    • 1...f2
      • 2.Qc6#
  • Tries
    • 1.Rb3+?
      • 1...Rhxa4
        • 2.Qh8#
      • 1...Raxa4!
  • Keys
    • 1.Ba3!
      • threat
        • 2.Sd6#
      • 1...fxe2
        • 2.Qc6#
      • 1...Rd4
        • 2.Qh8#
      • 1...Re4
        • 2.Qh8#
      • 1...Be4
        • 2.Rd5#
      • 1...Sc4
        • 2.Rb3#
      • 1...Se4
        • 2.Rb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 7
  • Sets
    • R(e);OGATE,XB(C)::QAR(A)
    • R(e);OGATE::QAR(A)
    • R(e);OGATE::QAR(A),XR(e)
    • P(d);OGATE,XR(B)::QAB(A)
    • P(d);OGATE::QAB(A)
  • Tries
    • Try
      • R(D);CHECK
      • Vars
        • R(e);OGATE,XB(C)::QAR(A)
      • Refutation
        • R(a);XB(C)
  • Actual
    • B(F);
    • Threat
      • S(I)
    • Vars
      • P(d);OGATE,XR(B)::QAB(A)
      • R(e);OGATE::QAR(A)
      • B(b);N_GUARD,S_CUTR(e)::B(C)+R(D)
      • S(c);S_CUTR(e)::B(C)+R(D)
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