MESON Chess Problem Database

Problem Display
PID: 152571 (3R4/8/n7/Qp2N2B/1n6/8/b7/r3k1K1 w - - 0 1)

Piatesi, Antonio

L'Italia Scacchistica, 1985

3R4/8/n7/Qp2N2B/1n6/8/b7/r3k1K1

#2

5 + 6

SOLUTION

  • SOUND
  • Sets
    • 1...Rd1
      • 2.Rxd1#
    • 1...Bb1
      • 2.Rd1#
    • 1...Bc4
      • 2.Qxa1#
    • 1...Be6
      • 2.Qxa1#
    • 1...Bf7
      • 2.Qxa1#
    • 1...Bg8
      • 2.Qxa1#
    • 1...Sc5
      • 2.Qxb4#
    • 1...Sc7
      • 2.Qxb4#
    • 1...Sb8
      • 2.Qxb4#
  • Tries
    • 1.Qb6?
      • threat
        • 2.Qf2#
        • 2.Qe3#
      • 1...Sd3
        • 2.Qe3#
      • 1...Sd5
        • 2.Qf2#
      • 1...Bc4
        • 2.Qf2#
      • 1...Sc2
        • 2.Qf2#
      • 1...Sc5!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Re8#
      • 1...Bxc4
        • 2.Qxa1#
      • 1...bxc4
        • 2.Qe5#
      • 1...Bb1
        • 2.Rd1#
      • 1...Sc5
        • 2.Qxb4#
      • 1...Sc7
        • 2.Qxb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • R(a);N_GUARD::R1(E),XR(a)
    • B(c);S_CUTR(a)::R1(E)
    • B(c);OGATE::QAR(B),XR(a)
    • S(f);N_GUARD::QAB(B),XS(d)
  • Tries
    • Try
      • Q(B);N_PINS(d)
      • Threat
        • DUALS(2)
      • Vars
        • S(d);::QAR2(B)
        • S(d);::QAB1(B)
        • B(c);::QAB1(B)
      • Refutation
        • S(f);
  • Actual
    • S(C);
    • Threat
      • R(E)
    • Vars
      • B(c);OGATE,XS(C)::QAR(B),XR(a)
      • P(e);OGATE,XS(C)::QAR(B)
      • B(c);S_CUTR(a)::R1(E)
      • S(f);N_GUARD::QAB(B),XS(d)
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