MESON Chess Problem Database

Problem Display
PID: 225903 (5R1b/Bp3b2/1R6/n7/3p4/4k3/6BQ/4K2n w - - 0 1)

Reiprich, Gejza

Praca, 1947

5R1b/Bp3b2/1R6/n7/3p4/4k3/6BQ/4K2n

#2

6 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Sf2
      • 2.Qg3#
    • 1...Sg3
      • 2.Qxg3#
    • 1...Sc4
      • 2.Rb3#
    • 1...d3
      • 2.Re6#
  • Tries
    • 1.Bxh1?
      • threat
        • 2.Qg3#
        • 2.Qd2#
      • 1...Bd5
        • 2.Qd2#
        • 2.Qe2#
      • 1...Bh5
        • 2.Qd2#
      • 1...Be5
        • 2.Qd2#
      • 1...Sb3
        • 2.Qg3#
      • 1...Sc4
        • 2.Rb3#
        • 2.Qg3#
      • 1...d3
        • 2.Re6#
        • 2.Qf2#
      • 1...Kd3!
    • 1.Qh3+?
      • 1...Sg3
        • 2.Qxg3#
      • 1...Kf4!
  • Keys
    • 1.Bd5!
      • threat
        • 2.Qd2#
      • 1...Kd3
        • 2.Qd2#
      • 1...Bxd5
        • 2.Qe2#
      • 1...Sf2
        • 2.Qg3#
      • 1...Sb3
        • 2.Rxb3#
      • 1...Sc4
        • 2.Rb3#
      • 1...d3
        • 2.Re6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • S(a);N_GUARD::QAR2(C)
    • S(a);N_GUARD::QAR2(C),XS(a)
    • S(d);N_GUARD,S_CUTB(f)::R(D)
    • P(c);SBLOCK::B(E)+R(D),DCHECK
  • Tries
    • Try
      • B(B);XS(a)
      • Threat
        • DUALS(2)
      • Vars
        • B(f);::QAB1(C)
        • B(g);::QAB1(C)
        • S(d);::QAR2(C)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(C);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAR2(C),XS(a)
      • Refutation
        • K(b);P_SPINB(f),S_FLIGHT
  • Actual
    • B(B);
    • Threat
      • QAB1(C)
    • Vars
      • K(b);P-FLIGHT::QAR1(C)
      • B(f);XB(B)::QAR1(C)
      • S(a);N_GUARD::QAR2(C)
      • S(d);N_GUARD::R(D),XS(d)
      • S(d);N_GUARD::R(D)
      • P(c);SBLOCK::B(E)+R(D),DCHECK
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