MESON Chess Problem Database

Problem Display
PID: 2417 (8/3K2B1/2Pp2p1/1Rpk2P1/1pp1p3/5R2/B4N2/8 w - - 0 1)

Jonas, Michael B

Source?, 0000

8/3K2B1/2Pp2p1/1Rpk2P1/1pp1p3/5R2/B4N2/8

#2

8 + 7

1679 American Chess Nuts 1868

SOLUTION

  • SOUND
  • Tries
    • 1.Sxe4?
      • 1...b3
        • 2.Sc3#
      • 1...Kxe4!
    • 1.Bb1?
      • threat
        • 2.Bxe4#
      • 1...exf3
        • 2.Be4#
      • 1...e3
        • 2.Be4#
      • 1...c3!
    • 1.Rf4?
      • 1...e3
        • 2.Bxc4#
        • 2.Rd4#
      • 1...b3!
  • Keys
    • 1.Rb3!
      • 1...cxb3
        • 2.Bxb3#
      • 1...c3
        • 2.R3xb4#
      • 1...e3
        • 2.Rd3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);XP(c)
      • Vars
        • P(a);N_GUARD,N_SPINP(b),P_SPINP(d)::S(B)
      • Refutation
        • K(e);N_SPINP(b),S_FLIGHT,XS(B)
    • Try
      • B(A);N_PINP(b),P_PINP(d)
      • Threat
        • B(A),XP(c)
      • Vars
        • P(c);XR(C)::B(A)
        • P(c);::B(A)
      • Refutation
        • P(b);
    • Try
      • R(C);
      • Refutation
        • P(a);N_SPINP(b),P_SPINP(d)
  • Actual
    • R(C);N_PINP(b),P_PINP(d)
    • Vars
      • P(b);N_SPINP(d),OGATE,P_SPINP(b),XR(C)::B(A),XP(b)
      • P(b);OGATEB::B(A)+R(C),XP(a)
      • P(c);N_GUARD::R(C)
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