MESON Chess Problem Database

Problem Display
PID: 53395 (N1b2b1q/7p/1R2Rp2/r1k5/3n1N2/r2p2QK/Bp1n4/6B1 w - - 0 1)

Marshall, Burney Means

Chess Life, 1955

N1b2b1q/7p/1R2Rp2/r1k5/3n1N2/r2p2QK/Bp1n4/6B1

#2

8 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...R3a4
      • 2.Sxd3#
    • 1...Ba6
      • 2.Rec6#
    • 1...Bxe6+
      • 2.Sxe6#
    • 1...f5
      • 2.Rec6#
  • Tries
    • 1.Qg5+?
      • 1...f5
        • 2.Rec6#
      • 1...fxg5!
  • Keys
    • 1.Qxd3!
      • threat
        • 2.Bxd4#
      • 1...Rxd3+
        • 2.Sxd3#
      • 1...Bxe6+
        • 2.Sxe6#
      • 1...Rb5
        • 2.Rxb5#
      • 1...R3a4
        • 2.Qf5#
      • 1...R5a4
        • 2.Rb5#
      • 1...Sb3
        • 2.Qc2#
        • 2.Qc3#
      • 1...Sf3
        • 2.Qc4#
      • 1...f5
        • 2.Rec6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 1
  • Sets
    • R(c);N_GUARD::S(E),XP(d)
    • B(j);N_PINR(G)::R1(G)
    • B(j);CHECK,XR(G)::S(E),XB(j)
    • P(h);N_PINR(G)::R1(G)
  • Tries
    • Try
      • Q(C);CHECK
      • Vars
        • P(h);N_PINR(G),P_SPINP(h)::R1(G)
      • Refutation
        • P(h);XQ(C)
  • Actual
    • Q(C);P_SPINQ(C),XP(d)
    • Threat
      • B(A),XS(e)
    • Vars
      • R(c);CHECK,XQ(C)::S(E),XR(c)
      • B(j);CHECK,XR(G)::S(E),XB(j)
      • R(f);N_GUARD::R1(F),XR(f)
      • R(c);N_PINQ(C)::QAR(C)
      • R(f);N_GUARD::R1(F)
      • S(b);N_PINQ(C)::QAR1(C)
      • P(h);N_PINR(G)::R1(G)
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