MESON Chess Problem Database

Problem Display
PID: 193686 (8/1B4Q1/8/1b2r3/3k4/1P6/2R1P1p1/6K1 w - - 0 1)

Hansen, Lorenz

Pittsburgh Gazette-Times, 1915

8/1B4Q1/8/1b2r3/3k4/1P6/2R1P1p1/6K1

#2

6 + 4

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3
      • 2.Qxe5#
  • Tries
    • 1.Qg4+?
      • 1...Re4
        • 2.Qxe4#
      • 1...Ke3!
  • Keys
    • 1.Qg3!
      • threat
        • 2.Qc3#
      • 1...Rd5
        • 2.Qf4#
      • 1...Bc4
        • 2.Rxc4#
      • 1...Bc6
        • 2.Qd3#
      • 1...Re3
        • 2.Qd6#
      • 1...Rc5
        • 2.Qf4#
      • 1...Bd3
        • 2.Qxd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • K(b);N_SPINR(d),S_FLIGHT::QAR2(F),XR(d)
  • Tries
    • Try
      • Q(F);CHECK,N_PINR(d)
      • Vars
        • R(d);N_GUARD,P_SPINR(d)::QAR1(F),XR(d)
      • Refutation
        • K(b);S_FLIGHT
  • Actual
    • Q(F);N_PINR(d)
    • Threat
      • QAB1(F)
    • Vars
      • R(d);N_GUARD::QAR2(F)
      • B(c);N_GUARD::R1(B),XB(c)
      • B(c);N_GUARD::QAR1(F)
      • R(d);OGATE,SBLOCK::QAR2(F)
      • B(c);N_GUARD::QAR1(F),XB(c)
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