MESON Chess Problem Database

Problem Display
PID: 2643 (1q1b4/2N1p3/3kP3/QP6/5N2/5rB1/8/1K2n3 w - - 0 1)

Reed, George A

Source?, 0000

1q1b4/2N1p3/3kP3/QP6/5N2/5rB1/8/1K2n3

#2

7 + 6

1679 American Chess Nuts 1868

SOLUTION

  • SOUND
  • Sets
    • 1...Ra3
      • 2.Sd3#
    • 1...Rc3
      • 2.Sd3#
    • 1...Rd3
      • 2.Sxd3#
  • Tries
    • 1.Sd3+?
      • 1...Rf4
        • 2.Bxf4#
      • 1...Rxg3!
  • Keys
    • 1.Qc3!
      • threat
        • 2.Se8#
      • 1...Qxb5+
        • 2.Sxb5#
      • 1...Qxc7
        • 2.Qd4#
      • 1...Rxc3
        • 2.Sd3#
      • 1...Rxf4
        • 2.Bxf4#
      • 1...Bxc7
        • 2.Qd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • R(b);N_GUARD::B(B)+S(C)
    • R(b);N_GUARD::B(B)+S(C),XR(b)
  • Tries
    • Try
      • S(C);CHECK
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::B(B),XR(b)
      • Refutation
        • R(b);XB(B)
  • Actual
    • Q(D);
    • Threat
      • S(G)
    • Vars
      • Q(e);CHECK,XP(E)::S(G),XQ(e)
      • Q(e);N_PINP(E),SBLOCK,XS(G)::QAR2(D)
      • R(b);N_GUARD,XQ(D)::B(B)+S(C)
      • R(b);OGATE,P_SPINR(b),XS(C)::B(B),XR(b)
      • B(f);SBLOCK,XS(G)::QAR2(D)
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