MESON Chess Problem Database

Problem Display
PID: 207491 (1r6/8/r1b5/p1pR1N1B/2k2K2/8/8/Q7 w - - 0 1)

Gold, Samuel

Magyarorszag es a Nagyvilag, 1871

1r6/8/r1b5/p1pR1N1B/2k2K2/8/8/Q7

#2

5 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd5
      • 2.Bf7#
  • Tries
    • 1.Rd4+?
      • 1...Kb3
        • 2.Bd1#
      • 1...Kb5
        • 2.Qb2#
        • 2.Qb1#
      • 1...cxd4!
    • 1.Qc3+?
      • 1...Kb5
        • 2.Qb3#
      • 1...Kxd5
        • 2.Bf7#
      • 1...Kxc3!
  • Keys
    • 1.Qa3!
      • threat
        • 2.Rxc5#
      • 1...Kb5
        • 2.Qb3#
      • 1...Kxd5
        • 2.Bf7#
      • 1...Bxd5
        • 2.Be2#
      • 1...Rb3
        • 2.Qxc5#
      • 1...Rb4
        • 2.Qd3#
      • 1...Rb5
        • 2.Se3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • K(a);OGATEB,S_FLIGHT,XR(C)::B(E)
  • Tries
    • Try
      • R(C);CHECK
      • Vars
        • K(a);S_FLIGHT::B(E)
      • Refutation
        • P(c);XR(C)
    • Try
      • Q(A);CHECK
      • Vars
        • K(a);P_SPINP(c),S_FLIGHT::QAR2(A)
        • K(a);S_FLIGHT,XR(C)::B(E)
      • Refutation
        • K(a);P-FLIGHT,XQ(A)
  • Actual
    • Q(A);
    • Threat
      • R1(C),XP(c)
    • Vars
      • K(a);P_SPINP(c),S_FLIGHT::QAR2(A)
      • K(a);OGATEB,S_FLIGHT,XR(C)::B(E)
      • B(e);SBLOCK,XR(C)::B(E)
      • R(f);SBLOCK::QAR1(A),XP(c)
      • R(f);SBLOCK::QAB1(A)
      • R(f);SBLOCK::S(D)
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