MESON Chess Problem Database

Problem Display
PID: 232647 (b1Q2R2/2PKb3/1p3Nq1/2Rn1kPP/2p2p2/3r1N2/2B5/8 w - - 0 1)

Hoffmann, Fritz

Freie Presse, 1978

b1Q2R2/2PKb3/1p3Nq1/2Rn1kPP/2p2p2/3r1N2/2B5/8

#2

10 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qh7
      • 2.Ke8#
    • 1...Qe8+
      • 2.Kxe8#
    • 1...Qxg5
      • 2.Ke8#
    • 1...Qh6
      • 2.Ke8#
    • 1...Qg7
      • 2.Ke8#
    • 1...Bxc5
      • 2.Kd8#
    • 1...Bd6
      • 2.Kxd6#
      • 2.Kd8#
    • 1...Bd8
      • 2.Kd6#
      • 2.Kxd8#
    • 1...Bxf8
      • 2.Kd8#
    • 1...Bc6+
      • 2.Kxc6#
    • 1...c3
      • 2.Bxd3#
  • Keys
    • 1.Rxc4!
      • threat
        • 2.Bxd3#
      • 1...Qe8+
        • 2.Kxe8#
      • 1...Bc6+
        • 2.Kxc6#
      • 1...Sc3+
        • 2.Kxe7#
      • 1...Se3+
        • 2.Kxe7#
      • 1...Sb4+
        • 2.Kxe7#
      • 1...Sxf6+
        • 2.Kxe7#
      • 1...Sxc7+
        • 2.Kxc7#
      • 1...Qxf6
        • 2.Ke8#
      • 1...Bxf6
        • 2.Kd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 7
  • Sets
    • Q(g);::QAB(I)+K(H)
    • Q(g);CHECK::QAB(I)+K(H),XQ(g)
    • Q(g);XP(D)::QAB(I)+K(H)
    • B(h);N_SPINS(d),XR(C)::QAB(I)+K(H)
    • B(h);XR(J)::QAB(I)+K(H)
    • B(i);CHECK::QAB(I)+K(H),XB(i)
    • P(b);N_GUARD::B(A),XR(a)
  • Actual
    • R(C);N_PINS(d),XP(b)
    • Threat
      • B(A),XR(a)
    • Vars
      • Q(g);CHECK::QAB(I)+K(H),XQ(g)
      • B(i);CHECK::QAB(I)+K(H),XB(i)
      • S(d);CHECK::QAB(I)+K(H),XB(h)
      • S(d);CHECK,P_SPINS(d),XS(F)::QAB(I)+K(H),XB(h)
      • S(d);CHECK,XP(G)::QAB(I)+K(H),XS(d)
      • Q(g);P_SPINQ(g),XS(F)::QAB(I)+K(H)
      • B(h);P_SPINB(h),XS(F)::QAB(I)+K(H)
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Developed and maintained by Brian Stephenson.
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