MESON Chess Problem Database

Problem Display
PID: 232626 (1Q6/8/2B1Np2/2R2p2/K1bN2p1/P2k4/1R1Ppn2/4r1n1 w - - 0 1)

Hoffmann, Fritz

Freie Presse, 1969

1Q6/8/2B1Np2/2R2p2/K1bN2p1/P2k4/1R1Ppn2/4r1n1

#2

9 + 9

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ba2
      • 2.Rc3#
    • 1...Bb3+
      • 2.Qxb3#
    • 1...Bb5+
      • 2.Qxb5#
    • 1...Ba6
      • 2.Rc3#
      • 2.Qb3#
    • 1...Sgh3
      • 2.Qg3#
  • Keys
    • 1.Qf4!
      • threat
        • 2.Qe3#
      • 1...Bb3+
        • 2.Rxb3#
      • 1...Bb5+
        • 2.Bxb5#
      • 1...Sd1
        • 2.Qxf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • B(f);OGATE::R1(F)
    • B(f);CHECK,N_GUARD::QAR2(I),XB(f)
    • B(f);CHECK,OGATEB::QAB(I),XB(f)
    • S(b);N_GUARD::QAR(I)
  • Actual
    • Q(I);
    • Threat
      • QAR1(I)
    • Vars
      • B(f);CHECK,N_GUARD::R(A),XB(f)
      • B(f);CHECK,OGATEB::B(G),XB(f)
      • S(d);N_GUARD::QAB(I),XP(h)
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