MESON Chess Problem Database

Problem Display
PID: 199438 (2Q1K2b/N6N/1pRPp1p1/n2k4/3Bp3/q1P5/8/3R3r w - - 0 1)

Ernst, Manfred

Freie Presse, 2001

(First published on Fri Dec 14 2001)

2Q1K2b/N6N/1pRPp1p1/n2k4/3Bp3/q1P5/8/3R3r

#2

9 + 9

16210 Problemschach-Jahrbuch (2001) 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Rh4
      • 2.Bf6#
      • 2.Bg7#
      • 2.Bxh8#
    • 1...Rh5
      • 2.Bf6#
      • 2.Bg7#
      • 2.Bxh8#
    • 1...Rh6
      • 2.Bf6#
      • 2.Bg7#
      • 2.Bxh8#
    • 1...Rxh7
      • 2.Bf6#
      • 2.Bg7#
      • 2.Bxh8#
    • 1...Bf6
      • 2.Sxf6#
    • 1...Sb3
      • 2.c4#
    • 1...Sxc6
      • 2.Qxc6#
    • 1...Sb7
      • 2.c4#
    • 1...e5
      • 2.Bg1#
  • Tries
    • 1.Sg5?
      • threat
        • 2.Qxe6#
      • 1...e5
        • 2.Bg1#
        • 2.Qe6#
      • 1...Qxd6!
    • 1.Sf8?
      • threat
        • 2.Qxe6#
      • 1...e5
        • 2.Bg1#
        • 2.Qe6#
      • 1...Qxd6!
  • Keys
    • 1.Ke7!
      • threat
        • 2.Qxe6#
      • 1...Qxd6+
        • 2.Rxd6#
      • 1...Rxh7+
        • 2.Bg7#
      • 1...Bf6+
        • 2.Sxf6#
      • 1...Sxc6+
        • 2.Qxc6#
      • 1...e5
        • 2.Bg1#
        • 2.Qe6#
        • 2.Qg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 3
  • Sets
    • B(i);N_GUARD::S(G),XB(i)
    • S(d);N_GUARD::P(B)
    • S(d);OGATE,XR(D)::QAB1(H),XS(d)
    • P(g);SBLOCK,S_CUTB(i)::R(A)+B(C)
  • Tries
    • Try
      • S(G);
      • Threat
        • QAB1(H),XP(g)
      • Refutation
        • Q(b);XP(E)
    • Try
      • S(G);
      • Threat
        • QAB1(H),XP(g)
      • Refutation
        • Q(b);XP(E)
  • Actual
    • K(I);P-FLIGHT,P_SPINP(E)
    • Threat
      • QAB1(H),XP(g)
    • Vars
      • Q(b);CHECK,OGATE,XP(E)::R1(D),XQ(b)
      • R(a);CHECK,N_GUARD,XS(G)::R(A)+B(C)
      • B(i);CHECK,N_GUARD::S(G),XB(i)
      • S(d);CHECK,OGATE,XR(D)::QAB1(H),XS(d)
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