MESON Chess Problem Database

Problem Display
PID: 34904 (4k3/1Np2pP1/1NpB1Pq1/2p2Ppb/3PKP2/3P1B2/4R3/4b3 w - - 0 1)

Apro, Laszlo

1st Comm., Problem Paradise, 1998-1999

4k3/1Np2pP1/1NpB1Pq1/2p2Ppb/3PKP2/3P1B2/4R3/4b3

#2

12 + 9

3666 Problem Paradise 2000
5454 Near Snap 2014

SOLUTION

  • SOUND
  • Sets
    • 1...Qxf5+
      • 2.Kxf5#
    • 1...Qxf6
      • 2.g8Q#
      • 2.g8R#
    • 1...Bxf3+
      • 2.Kxf3#
    • 1...cxd4
      • 2.Kxd4#
    • 1...gxf4
      • 2.Kxf4#
  • Tries
    • 1.Ke5?
      • threat
        • 2.Bxc6#
      • 1...Qxf5+
        • 2.Kxf5#
      • 1...Qxf6+
        • 2.Kxf6#
      • 1...cxd6+
        • 2.Kxd6#
      • 1...Bxf3!
  • Keys
    • 1.Ke3!
      • threat
        • 2.Bxc6#
      • 1...Bd2+
        • 2.Kxd2#
      • 1...Bf2+
        • 2.Kxf2#
      • 1...cxd4+
        • 2.Kxd4#
      • 1...gxf4+
        • 2.Kxf4#
      • 1...Qxf5
        • 2.g8Q#
        • 2.g8R#
      • 1...Bxf3
        • 2.Kxf3#

Anticipated by 125203(1998)

This is a version of 172027

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • Q(f);CHECK,XP(G)::R(A)+K(E),XQ(f)
    • Q(f);N_GUARD,N_PINP(G),XP(J)::P=Q
    • B(d);CHECK,XB(C)::R(A)+K(E),XB(d)
    • P(b);XP(D)::R(A)+K(E),XP(b)
    • P(c);XP(F)::R(A)+K(E),XP(c)
  • Tries
    • Try
      • K(E);N_SPINP(G),P-FLIGHT
      • Threat
        • B(C),XP(e)
      • Vars
        • Q(f);CHECK,XP(G)::R(A)+K(E),XQ(f)
        • Q(f);CHECK,XP(J)::R(A)+K(E),XQ(f)
        • P(g);CHECK,XB(I)::R(A)+K(E),XP(g)
      • Refutation
        • B(d);XB(C)
  • Actual
    • K(E);N_SPINP(G),P-FLIGHT
    • Threat
      • B(C),XP(e)
    • Vars
      • B(a);CHECK::R(A)+K(E),XB(a)
      • P(b);CHECK,XP(D)::R(A)+K(E),XP(b)
      • P(c);CHECK,XP(F)::R(A)+K(E),XP(c)
      • Q(f);N_GUARD,XP(G)::P=Q
      • B(d);XB(C)::R(A)+K(E),XB(d)
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