MESON Chess Problem Database

Problem Display
PID: 187943 (5Q2/5p2/4b2K/3r1k1n/3BN3/4P1nP/6P1/8 w - - 0 1)

Gold, Samuel

Pesti Naplo, 1910

5Q2/5p2/4b2K/3r1k1n/3BN3/4P1nP/6P1/8

#2

7 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Ra5
      • 2.Sd6#
    • 1...Rb5
      • 2.Sd6#
    • 1...Rc5
      • 2.Sd6#
    • 1...Rd6
      • 2.Sxd6#
    • 1...Sxe4
      • 2.g4#
    • 1...Sf4
      • 2.Sxg3#
    • 1...Sf6
      • 2.Sxg3#
    • 1...Sg7
      • 2.Sxg3#
  • Keys
    • 1.Qc5!
      • threat
        • 2.Sd6#
      • 1...Kxe4
        • 2.Qc2#
      • 1...Sxe4
        • 2.g4#
      • 1...Bd7
        • 2.Qxd5#
      • 1...Bc8
        • 2.Qxd5#
      • 1...Re5
        • 2.Qxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 7
  • Sets
    • R(b);N_GUARD::S(E)
    • R(b);N_GUARD::S(E),XR(b)
    • S(a);OGATE,SBLOCK,XS(E)::P(A)
    • S(d);N_GUARD::S(E),XS(a)
    • S(d);N_GUARD,N_SPINP(f)::S(E),XS(a)
  • Actual
    • Q(G);N_PINP(f),P_PINR(b)
    • Threat
      • S(E)
    • Vars
      • K(c);N_SPINR(b),OGATEB,S_FLIGHT,XS(E)::QAB(G)
      • S(a);OGATE,SBLOCK,XS(E)::P(A)
      • B(e);N_GUARD::QAR2(G),XR(b)
      • R(b);OGATE::QAR1(G),XR(b)
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