MESON Chess Problem Database

Problem Display
PID: 215843 (K7/1Q6/5p2/3p1n2/4k3/3N4/3P3P/R4B2 w - - 0 1)

Uhler, Ekkehard

Badische Neueste Nachrichten, 1982

K7/1Q6/5p2/3p1n2/4k3/3N4/3P3P/R4B2

#2

7 + 4

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kd4
      • 2.Ra4#
      • 2.Qb4#
  • Tries
    • 1.Bg2+?
      • 1...Kd4
        • 2.Qxd5#
      • 1...Kxd3!
    • 1.Ra4+?
      • 1...Kf3
        • 2.Rf4#
        • 2.Qxd5#
      • 1...Sd4!
    • 1.Qb4+?
      • 1...Kf3
        • 2.Qf4#
      • 1...d4
        • 2.Qb7#
      • 1...Sd4!
    • 1.Qc7?
      • threat
        • 2.Qf4#
      • 1...Kf3
        • 2.Qf4#
      • 1...Kd4
        • 2.Ra4#
        • 2.Qf4#
      • 1...d4
        • 2.Qc6#
        • 2.Qb7#
      • 1...Sd6!
    • 1.Qe7+?
      • 1...Kf3
        • 2.Qe2#
      • 1...Kd4
        • 2.Ra4#
        • 2.Qb4#
      • 1...Sxe7!
    • 1.Qb8?
      • threat
        • 2.Qf4#
      • 1...Kf3
        • 2.Qf4#
      • 1...Kd4
        • 2.Ra4#
        • 2.Qf4#
        • 2.Qb4#
      • 1...d4
        • 2.Qb7#
      • 1...Sd6!
  • Keys
    • 1.Qh7!
      • 1...Kf3
        • 2.Qxf5#
      • 1...Kd4
        • 2.Ra4#
      • 1...d4
        • 2.Qb7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(B);CHECK
      • Vars
        • K(a);N_SPINP(b),P-FLIGHT::QAR1(F),XP(b)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT,XS(E)
    • Try
      • R(A);CHECK
      • Refutation
        • S(c);P_SPINS(c)
    • Try
      • Q(F);CHECK,N_PINP(b)
      • Vars
        • K(a);OGATE,S_FLIGHT::QAR1(F)
        • P(b);OGATEB,P_SPINP(b),SBLOCK::QAB(F)
      • Refutation
        • S(c);P_SPINS(c)
    • Try
      • Q(F);N_PINP(b)
      • Threat
        • QAR1(F)
      • Vars
        • K(a);S_FLIGHT::QAR1(F)
      • Refutation
        • S(c);
    • Try
      • Q(F);CHECK,N_PINP(b)
      • Vars
        • K(a);OGATE,S_FLIGHT::QAB1(F)
      • Refutation
        • S(c);XQ(F)
    • Try
      • Q(F);N_PINP(b)
      • Threat
        • QAR1(F)
      • Vars
        • K(a);S_FLIGHT::QAR1(F)
        • P(b);OGATEB,SBLOCK::QAB(F)
      • Refutation
        • S(c);
  • Actual
    • Q(F);N_PINP(b),P_PINS(c)
    • Vars
      • K(a);N_SPINS(c),S_FLIGHT::QAR2(F),XS(c)
      • K(a);N_SPINS(c),P-FLIGHT::R(A)
      • P(b);OGATEB,SBLOCK::QAB(F)
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