MESON Chess Problem Database

Problem Display
PID: 207177 (5R2/1b6/p4q2/Q7/1PNp2r1/6PB/2PR2n1/4Bk1K w - - 0 1)

Palatz, Franz Ferdinand Ludwig

Il Problema, 1931

5R2/1b6/p4q2/Q7/1PNp2r1/6PB/2PR2n1/4Bk1K

#2

10 + 7

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe1
      • 2.Qa1#
  • Tries
    • 1.Bxg2+?
      • 1...Kxe1
        • 2.Qa1#
      • 1...Bxg2+!
  • Keys
    • 1.Qa1!
      • threat
        • 2.Bf2#
      • 1...Qf2
        • 2.Bxf2#
        • 2.Rdxf2#
        • 2.Rfxf2#
      • 1...Qf3
        • 2.Bxg2#
      • 1...Re4
        • 2.Bxg2#
      • 1...Bf3
        • 2.Rf2#
      • 1...d3
        • 2.Se3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • K(a);N_SPINQ(f),N_SPINS(b),OGATEB,P-FLIGHT,XB(A)::QAR(I)
  • Tries
    • Try
      • B(F);CHECK,P_SPINB(F),XS(b)
      • Vars
        • K(a);N_SPINQ(f),P-FLIGHT,XB(A)::QAR(I)
      • Refutation
        • B(g);CHECK,XB(F)
  • Actual
    • Q(I);
    • Threat
      • QAR(I)+B(A)
    • Vars
      • Q(f);S_CUTB(g)::B(F),XS(b)
      • R(d);S_CUTB(g)::B(F),XS(b)
      • B(g);N_SPINQ(f),S_CUTQ(f)::R1(D)
      • P(c);N_GUARD::S(H)
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