MESON Chess Problem Database

Problem Display
PID: 188470 (1N1Rn3/2p1p1np/2P1P1p1/2p1k1Bp/2B4N/3Kp3/4P3/6R1 w - - 0 1)

Mathieson, J

The Problemist, 1980

1N1Rn3/2p1p1np/2P1P1p1/2p1k1Bp/2B4N/3Kp3/4P3/6R1

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Sf5
      • 2.Sf3#
    • 1...Sxe6
      • 2.Rd5#
    • 1...Sd6
      • 2.Sd7#
  • Tries
    • 1.Bf4+?
      • 1...Kf6
        • 2.Sd7#
      • 1...Kxf4!
    • 1.Rg3?
      • threat
        • 2.Rxe3#
      • 1...Sf5
        • 2.Sf3#
      • 1...Sd6
        • 2.Sd7#
      • 1...Sf6!
    • 1.Rg4?
      • threat
        • 2.Re4#
      • 1...Sf6
        • 2.Bf4#
      • 1...Sd6
        • 2.Sd7#
      • 1...hxg4!
    • 1.Rd4?
      • threat
        • 2.Sd7#
      • 1...Sf6
        • 2.Bf4#
      • 1...cxd4!
  • Keys
    • 1.Rf1!
      • 1...Sxe6
        • 2.Rd5#
      • 1...Sf6
        • 2.Bf4#
      • 1...Sf5
        • 2.Sf3#
      • 1...Sd6
        • 2.Sd7#
      • 1...h6
        • 2.Sxg6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(h);SBLOCK::S(E)
    • S(h);SBLOCK,XP(H)::R1(J)
    • S(j);SBLOCK::S(I)
  • Tries
    • Try
      • B(F);CHECK
      • Vars
        • K(c);S_FLIGHT::S(I)
      • Refutation
        • K(c);S_FLIGHT,XB(F)
    • Try
      • R(A);
      • Threat
        • R(A),XP(a)
      • Vars
        • S(h);SBLOCK::S(E)
        • S(j);SBLOCK::S(I)
      • Refutation
        • S(j);
    • Try
      • R(A);
      • Threat
        • R1(A)
      • Vars
        • S(j);SBLOCK::B(F)
        • S(j);SBLOCK::S(I)
      • Refutation
        • P(d);XR(A)
    • Try
      • R(J);
      • Threat
        • S(I)
      • Vars
        • S(j);SBLOCK::B(F)
      • Refutation
        • P(b);XR(J)
  • Actual
    • R(A);
    • Vars
      • S(h);SBLOCK,XP(H)::R1(J)
      • S(j);SBLOCK::B(F)
      • S(h);SBLOCK::S(E)
      • S(j);SBLOCK::S(I)
      • P(i);N_GUARD::S(E),XP(e)
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