MESON Chess Problem Database

Problem Display
PID: 200736 (8/3K1n2/B7/R2nk1p1/4p1P1/2R4P/b4Q2/8 w - - 0 1)

Hoffmann, Fritz

Thuringer Landeszeitung, 2000

(First published on Sat Apr 15 2000)

8/3K1n2/B7/R2nk1p1/4p1P1/2R4P/b4Q2/8

#2

7 + 6

16210 Problemschach-Jahrbuch (2001) 2002

SOLUTION

  • SOUND
  • Tries
    • 1.Rf3?
      • threat
        • 2.Rf5#
        • 2.Qb2#
      • 1...e3
        • 2.Qxe3#
      • 1...Sd6
        • 2.Qb2#
      • 1...Sh6
        • 2.Qb2#
      • 1...exf3!
    • 1.Rc6?
      • threat
        • 2.Re6#
        • 2.Qf6#
      • 1...e3
        • 2.Qxe3#
      • 1...Sd8
        • 2.Qf6#
      • 1...Sd6!
    • 1.Rxd5+?
      • 1...Kxd5
        • 2.Rc5#
        • 2.Qc5#
      • 1...Bxd5!
  • Keys
    • 1.Qb2!
      • threat
        • 2.Rf3#
      • 1...Kd4
        • 2.Rd3#
      • 1...Kf4
        • 2.Qh2#
      • 1...Kf6
        • 2.Rc6#
      • 1...e3
        • 2.Rc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(B);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);OGATEB::QAR2(A),XP(b)
        • S(f);::QAB(A)
      • Refutation
        • P(b);XR(B)
    • Try
      • R(B);
      • Threat
        • DUALS(2)
      • Vars
        • P(b);OGATEB::QAR2(A),XP(b)
        • S(f);::QAB1(A)
      • Refutation
        • S(f);
    • Try
      • R(E);CHECK,XS(c)
      • Refutation
        • B(a);XR(E)
  • Actual
    • Q(A);
    • Threat
      • QAB(A)+R(B)
    • Vars
      • K(d);N_SPINS(c),S_FLIGHT::QAB(A)+R(B),DCHECK
      • K(d);N_SPINS(c),S_FLIGHT::QAB(A)
      • P(b);::QAB(A)+R(B)
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