MESON Chess Problem Database

Problem Display
PID: 35900 (5bB1/B7/n3RR2/2NP1p2/r1k4K/r2pP2b/1Q6/8 w - - 0 1)

Easter, Norris

2nd Comm., BCF 001. Ty., 1929-1930

5bB1/B7/n3RR2/2NP1p2/r1k4K/r2pP2b/1Q6/8

#2

9 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd5+
      • 2.Re4#
    • 1...Ra1
      • 2.Qb3#
    • 1...Ra2
      • 2.Qb3#
    • 1...Rb3
      • 2.Qxb3#
    • 1...f4
      • 2.Re4#
  • Keys
    • 1.Rb6!
      • threat
        • 2.Qd4#
      • 1...Kxc5+
        • 2.Rb4#
      • 1...Bxc5
        • 2.d6#
      • 1...Rc3
        • 2.Qb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 5
  • Sets
    • K(e);CHECK,S_FLIGHT,XP(E)::B(I)+R(F)
    • R(a);N_GUARD::QAB1(A)
    • R(a);N_GUARD::QAB1(A),XR(a)
    • P(f);N_GUARD::R(F)
  • Actual
    • R(F);
    • Threat
      • QAR1(A)
    • Vars
      • K(e);CHECK,P-FLIGHT,XS(D)::B(H)+R(F)
      • B(h);SBLOCK,XS(D)::B(I)+P(E)
      • R(a);SBLOCK::QAB1(A)
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