MESON Chess Problem Database

Problem Display
PID: 214472 (1RRN4/2K5/2P5/2k5/2q5/2Q3N1/1PBPPnP1/8 w - - 0 1)

Anonymous

American Chess Journal, 1878

1RRN4/2K5/2P5/2k5/2q5/2Q3N1/1PBPPnP1/8

#2

12 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Tries
    • 1.Sb7+?
      • 1...Kb5
        • 2.Qa5#
      • 1...Kd5!
    • 1.Qa5+?
      • 1...Kd4
        • 2.Sf5#
        • 2.e3#
      • 1...Qb5!
  • Keys
    • 1.Bb3!
      • threat
        • 2.Qxc4#
      • 1...Kd5
        • 2.Rb5#
      • 1...Qxc3
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(L);CHECK
      • Vars
        • K(c);N_SPINQ(b),P-FLIGHT,P_PINP(H)::QAR1(F)
      • Refutation
        • K(c);N_SPINQ(b),P-FLIGHT,P_PINP(H)
    • Try
      • Q(F);CHECK,N_PINQ(b)
      • Refutation
        • Q(b);P_SPINQ(b)
  • Actual
    • B(B);
    • Threat
      • QAR1(F),XQ(b)
    • Vars
      • K(c);P-FLIGHT,P_PINP(H)::R(J)
      • Q(b);N_SPINQ(b),XQ(F)::S(L)
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