MESON Chess Problem Database

Problem Display
PID: 253693 (4r1B1/8/5P2/2R5/1P1kP1p1/4n1N1/4PQp1/1K4b1 w - - 0 1)

Pachl, Franz

5th HM., Deutsche Schachzeitung, 1981

4r1B1/8/5P2/2R5/1P1kP1p1/4n1N1/4PQp1/1K4b1

#2

9 + 6

15601 Albrecht-Leiss-Degener Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe4
      • 2.Sf5#
    • 1...Re5
      • 2.Rc4#
  • Tries
    • 1.e5?
      • threat
        • 2.Qf4#
      • 1...Rxe5
        • 2.Rc4#
      • 1...Bxf2!
  • Keys
    • 1.Qf4!
      • threat
        • 2.e5#
      • 1...Rxe4
        • 2.Qxe4#
      • 1...Sc4
        • 2.Rxc4#
      • 1...Re5
        • 2.Qxe5#
      • 1...Sd5
        • 2.Sf5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • R(f);SBLOCK,XP(F)::S(D)
    • R(f);SBLOCK::R1(G)
  • Tries
    • Try
      • P(F);
      • Threat
        • QAR2(C)
      • Vars
        • R(f);SBLOCK,XP(F)::R1(G)
      • Refutation
        • B(a);N_SPINS(c),XQ(C)
  • Actual
    • Q(C);N_PINS(c)
    • Threat
      • QAR(C)+P(F)
    • Vars
      • R(f);OGATE,P_SPINR(f),XP(F)::QAR1(C),XR(f)
      • S(c);N_GUARD::R1(G),XS(c)
      • R(f);N_GUARD::QAB1(C),XR(f)
      • S(c);N_GUARD::S(D)
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