MESON Chess Problem Database

Problem Display
PID: 223185 (5b2/p1Nb4/R7/1n2k3/1P3p2/8/2B4K/6Q1 w - - 0 1)

Bettmann, Edgar

Bettmann, Henry Wald

New Orleans Times-Democrat, 1885

5b2/p1Nb4/R7/1n2k3/1P3p2/8/2B4K/6Q1

#2

6 + 6

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Be6
      • 2.Rxe6#
    • 1...Be8
      • 2.Re6#
    • 1...Bxb4
      • 2.Qg7#
    • 1...Bc5
      • 2.Qxc5#
      • 2.Qg7#
    • 1...Bd6
      • 2.Qg7#
    • 1...Bh6
      • 2.Qc5#
    • 1...Bg7
      • 2.Qc5#
      • 2.Qxg7#
    • 1...Sa3
      • 2.Qa1#
    • 1...Sd6
      • 2.Qa1#
    • 1...f3
      • 2.Qe3#
  • Tries
    • 1.Qa1+?
      • 1...Sc3
        • 2.Qxc3#
      • 1...Sd4!
    • 1.Qg5+?
      • 1...Bf5
        • 2.Qf6#
      • 1...Kd4!
  • Keys
    • 1.Rd6!
      • threat
        • 2.Qc5#
      • 1...Kxd6
        • 2.Qc5#
      • 1...Bxd6
        • 2.Qg7#
      • 1...Sxd6
        • 2.Qa1#
      • 1...Sxc7
        • 2.Qd4#
      • 1...Be6
        • 2.Rxe6#
      • 1...f3
        • 2.Qg3#
      • 1...Bc6
        • 2.Re6#
      • 1...Sc3
        • 2.Qd4#
      • 1...Sd4
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 4
  • Sets
    • B(e);N_GUARD::R1(E),XB(e)
    • B(e);N_GUARD::R1(E)
    • B(f);N_GUARD,XP(D)::QAB(A)
    • B(f);N_GUARD::QAB(A)
    • B(f);N_GUARD::QAR2(A)
    • S(b);N_GUARD::QAB(A)
    • P(a);N_GUARD::QAR2(A)
  • Tries
    • Try
      • Q(A);CHECK
      • Vars
        • S(b);N_GUARD,P_SPINS(b)::QAB(A),XS(b)
      • Refutation
        • S(b);P_SPINS(b)
    • Try
      • Q(A);CHECK
      • Vars
        • B(e);P_SPINB(e)::QAB1(A)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • R(E);
    • Threat
      • QAR2(A)
    • Vars
      • K(c);S_FLIGHT,XR(E)::QAB1(A)
      • B(f);N_GUARD,SBLOCK,XR(E)::QAB(A)
      • S(b);N_GUARD,SBLOCK,XR(E)::QAB(A)
      • S(b);N_GUARD,XS(F)::QAB1(A)
      • B(e);N_GUARD::R1(E),XB(e)
      • P(a);OGATEB::QAB(A)
      • B(e);N_GUARD::R1(E)
      • S(b);N_GUARD::QAB1(A)
      • S(b);N_GUARD::QAB1(A),XS(b)
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