MESON Chess Problem Database

Problem Display
PID: 133492 (8/6pK/1B6/r1rB2Q1/3kNn2/1R3pb1/n1P2Pb1/8 w - - 0 1)

Morra, Juan Carlos

The Field, 1961

(First published on Thu May 4 1961)

8/6pK/1B6/r1rB2Q1/3kNn2/1R3pb1/n1P2Pb1/8

#2

8 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Ra3
      • 2.Bxc5#
    • 1...Ra4
      • 2.Bxc5#
    • 1...Ra6
      • 2.Bxc5#
    • 1...Ra7
      • 2.Bxc5#
    • 1...Ra8
      • 2.Bxc5#
    • 1...Sc1
      • 2.Rb4#
    • 1...Sc3
      • 2.Rb4#
    • 1...Sb4
      • 2.Rxb4#
    • 1...Se2
      • 2.Rd3#
    • 1...Sd3
      • 2.Rxd3#
    • 1...Sh3
      • 2.Rd3#
    • 1...Sh5
      • 2.Rd3#
    • 1...Se6
      • 2.Rd3#
    • 1...Sg6
      • 2.Rd3#
  • Keys
    • 1.Sc3!
      • threat
        • 2.Qxg7#
      • 1...Bxf2
        • 2.Qxf4#
      • 1...Sxc3
        • 2.Rb4#
      • 1...Sxd5
        • 2.Qxd5#
      • 1...Ra7
        • 2.Sb5#
      • 1...Bh4
        • 2.Qxf4#
      • 1...Se2
        • 2.Qe3#
      • 1...Sd3
        • 2.Qe3#
      • 1...Sh3
        • 2.Qe3#
      • 1...Sh5
        • 2.Qe3#
      • 1...Se6
        • 2.Qe3#
      • 1...Sg6
        • 2.Qe3#
      • 1...g6
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 7
    • ADDED MATES = 4
    • REMOVED MATES = 6
  • Sets
    • R(g);N_GUARD::B(G),XR(h)
    • S(a);N_GUARD::R(C)
    • S(a);N_GUARD::R(C),XS(a)
    • S(f);N_GUARD::R1(C)
    • S(f);N_GUARD::R1(C),XS(f)
  • Actual
    • S(D);
    • Threat
      • QAB(F),XP(i)
    • Vars
      • B(d);N_GUARD,XP(B)::QAR2(F),XS(f)
      • S(a);N_GUARD,SBLOCK,XS(D)::R(C)
      • S(f);OGATE,XB(E)::QAR1(F),XS(f)
      • R(g);N_GUARD::S(D)
      • B(d);N_GUARD::QAR2(F),XS(f)
      • S(f);OGATE::QAB1(F)
      • P(i);N_GUARD::QAB(F)
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