MESON Chess Problem Database

Problem Display
PID: 189788 (3Q4/8/8/1Pp1N1K1/1nr1k1p1/2PN4/3P2p1/3B4 w - - 0 1)

Hoffmann, Karoly

HM., Budapesti Sakkor, 1912

3Q4/8/8/1Pp1N1K1/1nr1k1p1/2PN4/3P2p1/3B4

#2

8 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Sa2
      • 2.Qa8#
    • 1...Sc2
      • 2.Qa8#
    • 1...Sa6
      • 2.Qa8#
    • 1...g3
      • 2.Bf3#
  • Tries
    • 1.Sxc5+?
      • 1...Rxc5
        • 2.Qd4#
      • 1...Kxe5!
    • 1.Sxg4?
      • threat
        • 2.Sdf2#
        • 2.Sgf2#
        • 2.Sf6#
      • 1...Sxd3
        • 2.Qa8#
      • 1...Rd4
        • 2.Sdf2#
        • 2.Sxc5#
        • 2.Sgf2#
      • 1...Sd5
        • 2.Sdf2#
        • 2.Sgf2#
      • 1...g1B
        • 2.Sf6#
      • 1...g1R
        • 2.Sf2#
      • 1...g1Q!
    • 1.Qa8+?
      • 1...Sc6
        • 2.Qxc6#
      • 1...Sd5!
  • Keys
    • 1.Sd7!
      • threat
        • 2.Sf6#
      • 1...Kxd3
        • 2.Sxc5#
      • 1...Kd5
        • 2.S7xc5#
      • 1...Sxd3
        • 2.Qa8#
      • 1...Rd4
        • 2.S7xc5#
      • 1...Sd5
        • 2.Sf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 4
  • Sets
    • S(b);N_GUARD::QAB(H)
    • P(e);N_GUARD::B(A)
  • Tries
    • Try
      • S(D);CHECK,XP(f)
      • Vars
        • R(c);P_PINS(F),XS(D)::QAR1(H)
      • Refutation
        • K(d);P-FLIGHT,XS(F)
    • Try
      • S(F);XP(e)
      • Threat
        • DUALS(3)
      • Vars
        • S(b);N_GUARD,SBLOCK,XS(D)::QAB(H)
        • P(a);::S(F)
        • P(a);P_PINS(F)::S(D)
      • Refutation
        • P(a);P_PINS(F)
    • Try
      • Q(H);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAB(H),XS(b)
      • Refutation
        • S(b);P_SPINS(b)
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • K(d);S_FLIGHT,XS(D)::QAR(H)+S(F),DCHECK,XP(f)
      • K(d);S_FLIGHT::QAR(H)+S(F),XP(f)
      • S(b);N_GUARD,SBLOCK,XS(D)::QAB(H)
      • R(c);N_GUARD::S(F),XP(f)
      • S(b);SBLOCK::S(D)
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