MESON Chess Problem Database

Problem Display
PID: 232634 (1N1r1N2/3p2K1/2P1B2n/R1P1kp1R/1p2p3/4Q3/8/b7 w - - 0 1)

Hoffmann, Fritz

Freie Presse, 1971

1N1r1N2/3p2K1/2P1B2n/R1P1kp1R/1p2p3/4Q3/8/b7

#2

9 + 8

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rc8
      • 2.Sbxd7#
    • 1...Re8
      • 2.Sbxd7#
    • 1...Bd4
      • 2.Qg3#
    • 1...Sg4
      • 2.Rxf5#
    • 1...Sf7
      • 2.Rxf5#
    • 1...Sg8
      • 2.Rxf5#
    • 1...dxc6
      • 2.Sxc6#
  • Tries
    • 1.Bb3?
      • threat
        • 2.Sg6#
      • 1...Rxf8
        • 2.Sxd7#
      • 1...d5!
    • 1.Bc4?
      • threat
        • 2.Sg6#
      • 1...Rxf8
        • 2.Sxd7#
      • 1...d5!
    • 1.Bf7?
      • threat
        • 2.Sg6#
      • 1...Rxf8
        • 2.Sxd7#
      • 1...Sxf7!
  • Keys
    • 1.Qd2!
      • threat
        • 2.Qd6#
      • 1...dxc6
        • 2.Sxc6#
      • 1...dxe6
        • 2.Sg6#
      • 1...e3
        • 2.Qxe3#
      • 1...d5
        • 2.cxd5 ep#
      • 1...Bd4
        • 2.Qh2#
      • 1...Sf7
        • 2.Rxf5#
      • 1...d6
        • 2.cxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • R(h);N_GUARD::S(H),XP(g)
    • B(a);SBLOCK::QAB(A)
    • S(f);N_GUARD::R1(D),XP(e)
    • P(g);XP(E)::S(H),XP(g)
  • Tries
    • Try
      • B(F);
      • Threat
        • S(I)
      • Vars
        • R(h);N_GUARD,XS(I)::S(H),XP(g)
      • Refutation
        • P(g);
    • Try
      • B(F);
      • Threat
        • S(I)
      • Vars
        • R(h);N_GUARD,XS(I)::S(H),XP(g)
      • Refutation
        • P(g);
    • Try
      • B(F);
      • Threat
        • S(I)
      • Vars
        • R(h);N_GUARD,XS(I)::S(H),XP(g)
      • Refutation
        • S(f);XB(F)
  • Actual
    • Q(A);N_PINP(c),P_PINP(e)
    • Threat
      • QAB1(A)
    • Vars
      • P(g);XP(E)::S(H),XP(g)
      • P(g);SBLOCK,XB(F)::S(I)
      • P(c);OGATEB::QAR2(A),XP(c)
      • P(g);OGATE::R(B)+P(C),XP(g),EP
      • B(a);SBLOCK::QAB(A)
      • S(f);N_GUARD::R1(D),XP(e)
      • P(g);OGATE::R(B)+P(C),XP(g)
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