MESON Chess Problem Database

Problem Display
PID: 234521 (8/2K5/8/1b1kp3/1P4Q1/5N2/8/8 w - - 0 1)

Speckmann, Werner

Revista Romana de Sah, 1967

8/2K5/8/1b1kp3/1P4Q1/5N2/8/8

#2

4 + 3

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...e4
      • 2.Qg8#
  • Tries
    • 1.Sg5?
      • threat
        • 2.Qe4#
      • 1...e4
        • 2.Qxe4#
      • 1...Bd3!
  • Keys
    • 1.Sd2!
      • 1...e4
        • 2.Qxe4#
      • 1...Bf1
        • 2.Qd7#
      • 1...Be2
        • 2.Qd7#
      • 1...Bd3
        • 2.Qd7#
      • 1...Ba4
        • 2.Qc4#
      • 1...Bc4
        • 2.Qd7#
        • 2.Qxc4#
      • 1...Ba6
        • 2.Qd7#
      • 1...Bc6
        • 2.Qc4#
      • 1...Bd7
        • 2.Qxd7#
        • 2.Qc4#
      • 1...Be8
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • P(c);SBLOCK::QAB(C)
  • Tries
    • Try
      • S(A);
      • Threat
        • QAB1(C)
      • Vars
        • P(c);::QAB1(C),XP(c)
      • Refutation
        • B(a);
  • Actual
    • S(A);
    • Vars
      • P(c);::QAB1(C),XP(c)
      • B(a);N_GUARD::QAR2(C)
      • B(a);N_GUARD::QAB1(C)
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