MESON Chess Problem Database

Problem Display
PID: 232622 (R5b1/1p6/1b1p4/n5p1/k3q1Qr/3B1p2/P1R5/1N1KB3 w - - 0 1)

Hoffmann, Fritz

Freie Presse, 1968

R5b1/1p6/1b1p4/n5p1/k3q1Qr/3B1p2/P1R5/1N1KB3

#2

8 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Qd4
      • 2.Qd7#
    • 1...Qf4
      • 2.Qd7#
    • 1...Bg1
      • 2.Rxa5#
    • 1...Bf2
      • 2.Rxa5#
    • 1...Be3
      • 2.Rxa5#
    • 1...Bd4
      • 2.Rxa5#
    • 1...Bc5
      • 2.Rxa5#
    • 1...d5
      • 2.Qd7#
  • Keys
    • 1.Rb2!
      • threat
        • 2.Bb5#
      • 1...Bb3+
        • 2.axb3#
      • 1...Qb4
        • 2.Rxb4#
      • 1...Qc4
        • 2.Bc2#
      • 1...Qd4
        • 2.Qd7#
      • 1...Bc4
        • 2.Rb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 7
  • Sets
    • Q(c);N_GUARD,P_PINB(F)::QAB(G)
    • Q(c);N_GUARD::QAB(G)
    • B(g);N_GUARD::R1(H),XS(e)
    • B(g);N_GUARD,N_SPINQ(c)::R1(H),XS(e)
    • P(h);::QAB(G)
  • Actual
    • R(E);
    • Threat
      • B(F)
    • Vars
      • B(j);CHECK,OGATE::P(D),XB(j)
      • Q(c);N_GUARD::R1(E),XQ(c)
      • Q(c);S_CUTB(j)::B(F)
      • Q(c);N_GUARD,P_PINB(F)::QAB(G)
      • B(j);N_SPINQ(c),S_CUTQ(c)::R1(E)
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