MESON Chess Problem Database

Problem Display
PID: 147709 (1B6/8/2P3N1/2p5/2ppk3/3Rp2B/2P5/QN2K2b w - - 0 1)

Nietvelt, Gustaaf Josephus

Il Problema, 1931

1B6/8/2P3N1/2p5/2ppk3/3Rp2B/2P5/QN2K2b

#2

9 + 6

14868 Pirnie Collection 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Kf3
      • 2.Sd2#
  • Tries
    • 1.Sd2+?
      • 1...Kd5
        • 2.Se7#
      • 1...exd2+!
    • 1.Sc3+?
      • 1...Kf3
        • 2.Sh4#
        • 2.Qd1#
      • 1...dxc3!
    • 1.Bf5+?
      • 1...Kf3
        • 2.Sh4#
      • 1...Kd5
        • 2.Se7#
      • 1...Kxf5!
    • 1.Rxd4+?
      • 1...Kf3
        • 2.Sh4#
      • 1...cxd4!
    • 1.Qxd4+?
      • 1...Kf3
        • 2.Sd2#
        • 2.Sh4#
        • 2.Rxe3#
        • 2.Qxe3#
        • 2.Qf4#
        • 2.Qg4#
        • 2.Qd5#
      • 1...cxd4!
  • Keys
    • 1.Qa8!
      • threat
        • 2.c7#
      • 1...Kf3
        • 2.Sd2#
      • 1...Kd5
        • 2.Sc3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(e);P_SPINP(b),S_FLIGHT::S(B)
  • Tries
    • Try
      • S(B);CHECK
      • Vars
        • K(e);P_SPINP(d),S_FLIGHT::S(H)
      • Refutation
        • P(b);CHECK,XS(B)
    • Try
      • S(B);CHECK
      • Refutation
        • P(d);XS(B)
    • Try
      • B(F);CHECK
      • Vars
        • K(e);P_SPINP(b),S_FLIGHT::S(H)
        • K(e);P_SPINP(d),S_FLIGHT::S(H)
      • Refutation
        • K(e);S_FLIGHT,XB(F)
    • Try
      • R(E);CHECK,XP(d)
      • Vars
        • K(e);S_FLIGHT::S(H)
      • Refutation
        • P(f);XR(E)
    • Try
      • Q(A);CHECK,XP(d)
      • Refutation
        • P(f);XQ(A)
  • Actual
    • Q(A);
    • Threat
      • QAB(A)+P(G)
    • Vars
      • K(e);P_SPINP(b),S_FLIGHT::S(B)
      • K(e);P_SPINP(d),S_FLIGHT::S(B)
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