MESON Chess Problem Database

Problem Display
PID: 118099 (5b2/4pKp1/8/5k2/3R1P1R/4nPn1/5N2/8 w - - 0 1)

Pauly, Wolfgang

Norsk Skakbladet, 1920

5b2/4pKp1/8/5k2/3R1P1R/4nPn1/5N2/8

#2

6 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sg4
      • 2.fxg4#
    • 1...Se4
      • 2.fxe4#
  • Tries
    • 1.Re4?
      • threat
        • 2.Re5#
      • 1...Sxe4
        • 2.fxe4#
      • 1...Sg4
        • 2.fxg4#
      • 1...e5
        • 2.Rxe5#
      • 1...Sc4!
    • 1.Rd5+?
      • 1...e5
        • 2.Rxe5#
      • 1...Sxd5!
    • 1.Rh5+?
      • 1...g5
        • 2.Rxg5#
      • 1...Sxh5!
  • Keys
    • 1.Rg4!
      • threat
        • 2.Rg5#
      • 1...Sxg4
        • 2.fxg4#
      • 1...Se4
        • 2.fxe4#
      • 1...g5
        • 2.Rxg5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • S(a);OGATE::P(B),XS(a)
    • S(b);OGATE::P(B),XS(b)
  • Tries
    • Try
      • R(C);
      • Threat
        • R1(C)
      • Vars
        • S(b);OGATE,XR(C)::P(B),XS(b)
        • S(a);OGATE::P(B),XS(a)
        • P(d);::R1(C),XP(d)
      • Refutation
        • S(a);
    • Try
      • R(C);CHECK
      • Vars
        • P(d);P_SPINP(d)::R1(C),XP(d)
      • Refutation
        • S(a);XR(C)
    • Try
      • R(E);CHECK
      • Vars
        • P(e);P_SPINP(e)::R1(E),XP(e)
      • Refutation
        • S(b);XR(E)
  • Actual
    • R(E);
    • Threat
      • R1(E)
    • Vars
      • S(a);OGATE,XR(E)::P(B),XS(a)
      • S(b);OGATE::P(B),XS(b)
      • P(e);::R1(E),XP(e)
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