MESON Chess Problem Database

Problem Display
PID: 16433 (n2r4/2p1R3/B1k3q1/3pQ3/1P2P3/KN4br/7B/8 w - - 0 1)

Koldijk, Albert Marinus

2nd HM., Limburgs Dagblad, 1940

n2r4/2p1R3/B1k3q1/3pQ3/1P2P3/KN4br/7B/8

#2

8 + 8

3098 FIDE Album (1914-1944) (I) 1971

SOLUTION

  • SOUND
  • Sets
    • 1...Sb6
      • 2.Sd4#
      • 2.Sa5#
      • 2.Rxc7#
      • 2.b5#
    • 1...dxe4
      • 2.Qc5#
    • 1...d4
      • 2.Qc5#
  • Tries
    • 1.Qc3+?
      • 1...Kd6
        • 2.Qc5#
      • 1...Kb6!
    • 1.Qxd5+?
      • 1...Kb6
        • 2.Qb7#
      • 1...Rxd5!
  • Keys
    • 1.Qd4!
      • threat
        • 2.Qc5#
      • 1...Kd6
        • 2.Qc5#
      • 1...Qd6
        • 2.Sa5#
      • 1...Bf2
        • 2.b5#
      • 1...Bd6
        • 2.exd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • P(c);OGATE,XP(E)::QAR1(F)
    • P(c);OGATE::QAR1(F)
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • K(d);P-FLIGHT,P_SPINB(a)::QAB1(F)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • Q(F);CHECK,XP(c)
      • Vars
        • K(d);OGATE,P-FLIGHT::QAR1(F)
      • Refutation
        • R(h);XQ(F)
  • Actual
    • Q(F);
    • Threat
      • QAR1(F)
    • Vars
      • K(d);P-FLIGHT,P_SPINB(a),P_SPINP(c)::QAB1(F)
      • Q(e);P_PINP(D),SBLOCK::S(C)
      • B(a);P_PINS(C)::P(D)
      • B(a);P_PINP(D),P_PINS(C),S_CUTR(h)::P(E),XP(c)
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