MESON Chess Problem Database

Problem Display
PID: 78224 (2K5/2p1B3/2p1k1B1/p1Q1b2N/r2p1pp1/1N2n3/4R3/4r2b w - - 0 1)

Morra, Juan Carlos

The Tablet, 1958

(First published on Sat May 31 1958)

2K5/2p1B3/2p1k1B1/p1Q1b2N/r2p1pp1/1N2n3/4R3/4r2b

#2

7 + 12

15239 Valois Notebooks 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Bf6
      • 2.Sxf4#
    • 1...Bg7
      • 2.Sxf4#
      • 2.Sxg7#
    • 1...Bh8
      • 2.Sxf4#
    • 1...Sd1
      • 2.Sxf4#
      • 2.Sg7#
      • 2.Qxe5#
    • 1...Sf1
      • 2.Sxf4#
      • 2.Sg7#
      • 2.Qxe5#
    • 1...Sc2
      • 2.Sxf4#
      • 2.Sg7#
      • 2.Qxe5#
    • 1...Sg2
      • 2.Sg7#
      • 2.Qxe5#
    • 1...Sc4
      • 2.Sxd4#
      • 2.Sxf4#
      • 2.Sg7#
    • 1...Sd5
      • 2.Sg7#
    • 1...Sf5
      • 2.Sxf4#
      • 2.Qxe5#
  • Tries
    • 1.Sxd4+?
      • 1...Bxd4
        • 2.Sxf4#
      • 1...Rxd4!
  • Keys
    • 1.Bf6!
      • threat
        • 2.Qxe5#
      • 1...Bxf6
        • 2.Sxf4#
      • 1...Bd5
        • 2.Qe7#
      • 1...Bd6
        • 2.Qf5#
      • 1...Sc4
        • 2.Sxd4#
      • 1...Sd5
        • 2.Qxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(i);N_GUARD,P_SPINS(c)::S(D),XP(f)
    • S(c);P_SPINB(i)::S(D)
  • Tries
    • Try
      • S(B);CHECK,XP(e)
      • Vars
        • B(i);P_SPINS(c),XS(B)::S(D),XP(f)
      • Refutation
        • R(d);XS(B)
  • Actual
    • B(F);
    • Threat
      • QAR1(C),XB(i)
    • Vars
      • B(i);N_GUARD,P_SPINS(c),SBLOCK,XB(F)::S(D),XP(f)
      • B(b);SBLOCK::QAR1(C)
      • B(i);OGATE,P_SPINS(c),SBLOCK::QAB1(C)
      • S(c);P_SPINB(i),S_CUTR(d)::S(B),XP(e)
      • S(c);P_SPINB(i),S_CUTB(b)::QAR2(C),XP(j)
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