MESON Chess Problem Database

Problem Display
PID: 194197 (Rnk2N2/5N2/3b4/3K2n1/8/8/8/1Q6 w - - 0 1)

Kauder, Jiri

Magyar Sakkvilag, 1917

Rnk2N2/5N2/3b4/3K2n1/8/8/8/1Q6

#2

5 + 4

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Kc7
      • 2.Qxb8#
    • 1...Ba3
      • 2.Qxb8#
    • 1...Bc5
      • 2.Qxb8#
    • 1...Be7
      • 2.Qxb8#
  • Tries
    • 1.Sxd6+?
      • 1...Kc7
        • 2.Qxb8#
      • 1...Kd8!
    • 1.Rxb8+?
      • 1...Kc7
        • 2.Qb6#
        • 2.Qb7#
      • 1...Bxb8!
  • Keys
    • 1.Qb5!
      • threat
        • 2.Qd7#
      • 1...Kc7
        • 2.Qxb8#
      • 1...Bxf8
        • 2.Qc6#
      • 1...Bc7
        • 2.Qa6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • K(d);N_SPINS(c),P-FLIGHT::QAB1(A),XS(c)
    • B(b);N_GUARD::QAR1(A),XS(c)
  • Tries
    • Try
      • S(C);CHECK,XB(b)
      • Vars
        • K(d);N_SPINS(c),P-FLIGHT::QAB1(A),XS(c)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • R(D);CHECK,XS(c)
      • Refutation
        • B(b);XR(D)
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • K(d);N_SPINS(c),P-FLIGHT::QAB1(A),XS(c)
      • B(b);N_GUARD,XS(E)::QAR2(A)
      • B(b);SBLOCK::QAB(A)
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