MESON Chess Problem Database

Problem Display
PID: 181112 (K4b2/Q7/4B3/P1R5/3k4/1n1ppPp1/3n4/4q3 w - - 0 1)

Palkoska, Emil

Tidskrift for Schack, 1904

K4b2/Q7/4B3/P1R5/3k4/1n1ppPp1/3n4/4q3

#2

6 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Bxc5
      • 2.Qg7#
  • Tries
    • 1.Qc7?
      • threat
        • 2.Rd5#
        • 2.Qe5#
      • 1...Bxc5
        • 2.Qg7#
      • 1...Sxf3
        • 2.Rc4#
      • 1...Sc4
        • 2.Rxc4#
      • 1...e2
        • 2.Qe5#
      • 1...Bd6
        • 2.Rd5#
        • 2.Qxd6#
      • 1...Bg7
        • 2.Rd5#
        • 2.Qd6#
      • 1...Sxc5!
    • 1.Qd7+?
      • 1...Bd6
        • 2.Qxd6#
      • 1...Kxc5!
  • Keys
    • 1.Qb8!
      • threat
        • 2.Qe5#
      • 1...Kxc5
        • 2.Qb6#
      • 1...Bxc5
        • 2.Qh8#
      • 1...Sxf3
        • 2.Rc4#
      • 1...Sxc5
        • 2.Qb2#
      • 1...Sc4
        • 2.Rxc4#
      • 1...Bd6
        • 2.Qxd6#
      • 1...Bg7
        • 2.Qd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • B(h);N_GUARD,P_SPINB(h),SBLOCK,XR(C)::QAB(E)
  • Tries
    • Try
      • Q(E);
      • Threat
        • DUALS(2)
      • Vars
        • B(h);N_GUARD,SBLOCK,XR(C)::QAB(E)
        • S(b);N_GUARD,XP(A)::R1(C)
        • S(b);N_GUARD::R1(C),XS(b)
        • P(e);::QAB1(E)
      • Refutation
        • S(c);XR(C)
    • Try
      • Q(E);CHECK
      • Vars
        • B(h);N_GUARD,P_SPINB(h)::QAR2(E),XB(h)
      • Refutation
        • K(g);S_FLIGHT,XR(C)
  • Actual
    • Q(E);
    • Threat
      • QAB1(E)
    • Vars
      • K(g);OGATEB,S_FLIGHT,XR(C)::QAB1(E)
      • B(h);OGATE,SBLOCK,XR(C)::QAB(E)
      • S(b);N_GUARD,XP(A)::R1(C)
      • S(c);OGATE,SBLOCK,XR(C)::QAB(E)
      • S(b);N_GUARD::R1(C),XS(b)
      • B(h);N_GUARD::QAR2(E),XB(h)
      • B(h);N_GUARD::QAR2(E)
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