MESON Chess Problem Database

Problem Display
PID: 90527 (8/pp5n/rk2N3/3QK3/b4p2/1p2rB2/5B1b/8 w - - 0 1)

Ahlheim, Karl-Heinz

Die Schwalbe, 1968

8/pp5n/rk2N3/3QK3/b4p2/1p2rB2/5B1b/8

#2

5 + 10

6490 yacpdb 2009
15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Tries
    • 1.Kf5?
      • threat
        • 2.Qc5#
      • 1...Bb5
        • 2.Qd8#
      • 1...Ra5!
    • 1.Kd6?
      • threat
        • 2.Qc5#
      • 1...Ra5
        • 2.Qxb7#
      • 1...Bb5!
  • Keys
    • 1.Kd4!
      • threat
        • 2.Qc5#
      • 1...Rd3+
        • 2.Kxd3#
      • 1...Re4+
        • 2.Kxe4#
      • 1...Ra5
        • 2.Qxb7#
      • 1...Bb5
        • 2.Qd8#
      • 1...Rc3
        • 2.Kxc3#
      • 1...Re5
        • 2.Kxe5#

FEATURES

  • Static
    • TYPE = WHITE_IN_CHECK
  • Tries
    • Try
      • K(D);P-FLIGHT
      • Threat
        • QAB1(C)
      • Vars
        • B(d);SBLOCK::QAB(C)
      • Refutation
        • R(f);P_PINQ(C)
    • Try
      • K(D);S_FLIGHT
      • Threat
        • QAB1(C)
      • Vars
        • R(f);SBLOCK::QAR1(C),XP(i)
      • Refutation
        • B(d);
  • Actual
    • K(D);N_PINR(c),S_FLIGHT
    • Threat
      • QAB1(C)
    • Vars
      • R(c);CHECK::B(A)+K(D),XR(c)
      • R(f);SBLOCK::QAR1(C),XP(i)
      • B(d);SBLOCK::QAB(C)
      • R(c);::B(A)+K(D),XR(c)
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