MESON Chess Problem Database

Problem Display
PID: 143342 (4R3/5p2/1KpPrN1B/4N3/1p1k4/8/8/3BQ1b1 w - - 0 1)

Guida, Marco

The Problemist, 2011

4R3/5p2/1KpPrN1B/4N3/1p1k4/8/8/3BQ1b1

#2

8 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd6
      • 2.Qd2#
      • 2.Qxb4#
    • 1...Bh2
      • 2.Qe3#
    • 1...Be3
      • 2.Qxe3#
  • Tries
    • 1.Bc2?
      • threat
        • 2.Qa1#
      • 1...Rxe5
        • 2.Qxb4#
      • 1...Rxf6
        • 2.Qd2#
      • 1...b3!
    • 1.Rxe6?
      • threat
        • 2.Qd2#
        • 2.Qxb4#
      • 1...b3
        • 2.Qd2#
        • 2.Qb4#
      • 1...Be3
        • 2.Bxe3#
        • 2.Qxb4#
        • 2.Qxe3#
      • 1...c5
        • 2.Qd2#
      • 1...fxe6!
  • Keys
    • 1.Bb3!
      • threat
        • 2.Qa1#
      • 1...Rxe5
        • 2.Qd2#
      • 1...Rxf6
        • 2.Qxb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 2
  • Sets
    • B(a);N_GUARD::QAB1(B)
    • B(a);N_GUARD::QAB1(B),XB(a)
  • Tries
    • Try
      • B(A);
      • Threat
        • QAB(B)
      • Vars
        • R(e);XS(C)::QAR2(B),XP(b)
        • R(e);XS(F)::QAR2(B)
      • Refutation
        • P(b);
    • Try
      • R(H);XR(e)
      • Threat
        • DUALS(2)
      • Vars
        • P(d);::QAR2(B)
      • Refutation
        • P(f);XR(H)
  • Actual
    • B(A);
    • Threat
      • QAB(B)
    • Vars
      • R(e);XS(C)::QAR2(B)
      • R(e);XS(F)::QAR2(B),XP(b)
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