MESON Chess Problem Database

Problem Display
PID: 138910 (6B1/Bnnb4/1rN3QK/1rk5/pp6/1p6/3R4/8 w - - 0 1)

Jensih, GM

The Problemist, 1936

6B1/Bnnb4/1rN3QK/1rk5/pp6/1p6/3R4/8

#2

6 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Bxc6
      • 2.Qg1#
    • 1...Sa5
      • 2.Qd6#
    • 1...Sd6
      • 2.Qxd6#
    • 1...Sd8
      • 2.Qd6#
    • 1...b2
      • 2.Rc2#
      • 2.Qc2#
  • Tries
    • 1.Rd5+?
      • 1...Kc4
        • 2.Qd3#
      • 1...Sxd5!
  • Keys
    • 1.Sa5!
      • threat
        • 2.Sxb7#
      • 1...Rxa5
        • 2.Qxb6#
      • 1...Sxa5
        • 2.Qd6#
      • 1...Bc6
        • 2.Qg1#
        • 2.Qxc6#
      • 1...Be6
        • 2.Qg1#
      • 1...Bc8
        • 2.Qc6#
      • 1...Sd6
        • 2.Qg1#
        • 2.Qxd6#
      • 1...Sd8
        • 2.Qd6#
      • 1...Sd5
        • 2.Rxd5#
      • 1...Se6
        • 2.Qf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 2
  • Sets
    • B(i);SBLOCK,XS(B)::QAB(C)
    • S(g);N_GUARD::QAB1(C)
    • S(g);N_GUARD::QAB1(C),XS(g)
  • Tries
    • Try
      • R(A);CHECK
      • Vars
        • K(e);N_SPINR(f),P-FLIGHT::QAB1(C)
      • Refutation
        • S(h);XR(A)
  • Actual
    • S(B);P_SPINQ(C)
    • Threat
      • S(B),XS(g)
    • Vars
      • R(d);N_GUARD,XS(B)::QAB1(C),XR(f)
      • S(g);N_GUARD,XS(B)::QAB1(C)
      • B(i);N_PINQ(C)::QAB(C)
      • B(i);N_GUARD::QAR1(C)
      • S(g);N_GUARD::QAB1(C)
      • S(h);N_GUARD::R1(A),XS(h)
      • S(h);N_PINQ(C)::QAR(C)
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