MESON Chess Problem Database

Problem Display
PID: 242308 (1N3r2/2p1Bpp1/3bP1b1/1Nnpk3/R5P1/2rp2P1/3QnP2/4RK2 w - - 0 1)

Morra, Juan Carlos

Arbejder-Skak, 1954

1N3r2/2p1Bpp1/3bP1b1/1Nnpk3/R5P1/2rp2P1/3QnP2/4RK2

#2

11 + 12

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Sxe6
      • 2.Sd7#
    • 1...fxe6
      • 2.Sc6#
  • Tries
    • 1.Qg5+?
      • 1...Kxe6
        • 2.Sd4#
      • 1...Bf5
        • 2.Qxf5#
      • 1...f5!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Qf4#
      • 1...Ke4
        • 2.Qe3#
      • 1...Sxe6
        • 2.Sf3#
      • 1...fxe6
        • 2.Sdc6#
      • 1...Be4
        • 2.Sbc6#
      • 1...Se4
        • 2.Sd7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(d);N_GUARD,SBLOCK,XP(I)::S(K)
    • P(j);P_PINP(D),SBLOCK,XP(I)::S(K)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • K(f);P-FLIGHT,XP(I)::S(H)
        • B(h);N_GUARD,P_SPINB(h)::QAR1(C),XB(h)
      • Refutation
        • P(j);P_SPINP(j)
  • Actual
    • S(H);
    • Threat
      • QAB1(C)
    • Vars
      • K(f);P-FLIGHT::QAR1(C)
      • S(d);SBLOCK,XP(I)::S(H)
      • P(j);P_PINP(D),SBLOCK,XP(I)::S(H)
      • B(h);N_SPINS(a),SBLOCK::S(K)
      • S(d);N_GUARD,N_SPINS(a),SBLOCK::S(K)
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