MESON Chess Problem Database

Problem Display
PID: 104549 (8/3R4/8/8/4K1p1/8/4kN1Q/4brn1 w - - 0 1)

Reiprich, Gejza

Praca, 1949

8/3R4/8/8/4K1p1/8/4kN1Q/4brn1

#2

4 + 5

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sh1+?
      • 1...Rf2
        • 2.Sg3#
      • 1...Bf2!
    • 1.Qf4?
      • threat
        • 2.Qe3#
      • 1...Bxf2
        • 2.Qd2#
      • 1...Bd2
        • 2.Qxd2#
      • 1...Rxf2!
  • Keys
    • 1.Qh6!
      • threat
        • 2.Qe3#
      • 1...Kxf2
        • 2.Qh2#
      • 1...Rxf2
        • 2.Qa6#
      • 1...Bxf2
        • 2.Qd2#
      • 1...Bd2
        • 2.Qxd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(A);CHECK
      • Vars
        • R(b);P_SPINR(b)::S(A)
      • Refutation
        • B(a);P_SPINB(a)
    • Try
      • Q(B);
      • Threat
        • QAR1(B)
      • Vars
        • B(a);N_GUARD,SBLOCK,XS(A)::QAR1(B)
        • B(a);N_GUARD::QAR1(B),XB(a)
      • Refutation
        • R(b);XS(A)
  • Actual
    • Q(B);
    • Threat
      • QAR1(B)
    • Vars
      • K(d);OGATEB,P-FLIGHT,XS(A)::QAR2(B)
      • R(b);SBLOCK,XS(A)::QAB(B)
      • B(a);N_GUARD,SBLOCK,XS(A)::QAR1(B)
      • B(a);N_GUARD::QAR1(B),XB(a)
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