MESON Chess Problem Database

Problem Display
PID: 132367 (b3r3/1n1p2B1/4n3/1r2ppb1/NpNk1p2/1P1p1Q2/5PB1/3K4 w - - 0 1)

Parrinello, Mario

Die Schwalbe, 1988

b3r3/1n1p2B1/4n3/1r2ppb1/NpNk1p2/1P1p1Q2/5PB1/3K4

#2

8 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Rd5
      • 2.Qxd5#
    • 1...Rb6
      • 2.Bxe5#
      • 2.Qd5#
    • 1...Sec5
      • 2.Qd5#
    • 1...Sbc5
      • 2.Bxe5#
    • 1...d5
      • 2.Bxe5#
  • Tries
    • 1.Scb2?
      • threat
        • 2.Qxd3#
      • 1...Sec5
        • 2.Qd5#
      • 1...d2
        • 2.Qd3#
      • 1...Sbc5!
    • 1.Sd6?
      • threat
        • 2.Sxb5#
        • 2.Sxf5#
      • 1...Sxg7
        • 2.Sxb5#
      • 1...Ra5
        • 2.Sxf5#
      • 1...Rc5
        • 2.Sxf5#
      • 1...Rd5
        • 2.Sxf5#
        • 2.Qxd5#
      • 1...Rb6
        • 2.Sxf5#
        • 2.Qd5#
      • 1...Rf8
        • 2.Sxb5#
      • 1...Sc7
        • 2.Sxf5#
      • 1...Sxd6!
    • 1.Bf1?
      • threat
        • 2.Qxd3#
      • 1...Sbc5
        • 2.Bxe5#
      • 1...d2
        • 2.Qd3#
      • 1...Sec5!
  • Keys
    • 1.Kd2!
      • threat
        • 2.Qxd3#
      • 1...Sec5
        • 2.Qd5#
      • 1...Sbc5
        • 2.Bxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 2
  • Sets
    • R(e);N_GUARD::QAR1(E),XR(e)
    • S(i);S_CUTR(e)::QAR1(E)
    • S(j);S_CUTR(e)::B(H),XP(f)
    • P(k);S_CUTR(e)::B(H),XP(f)
  • Tries
    • Try
      • S(G);
      • Threat
        • QAR1(E),XP(a)
      • Vars
        • S(i);S_CUTR(e)::QAR1(E)
        • P(a);::QAR1(E)
      • Refutation
        • S(j);
    • Try
      • S(G);
      • Threat
        • DUALS(2)
      • Vars
        • S(i);N_SPINP(f),XB(H)::S(G),XR(e)
        • R(e);::S(G),XP(g)
        • R(m);::S(G),XR(e)
        • S(i);::S(G),XP(g)
      • Refutation
        • S(j);XS(G)
    • Try
      • B(C);
      • Threat
        • QAR1(E),XP(a)
      • Vars
        • S(j);S_CUTR(e)::B(H),XP(f)
        • P(a);::QAR1(E)
      • Refutation
        • S(i);
  • Actual
    • K(A);P-FLIGHT
    • Threat
      • QAR1(E),XP(a)
    • Vars
      • S(i);S_CUTR(e)::QAR1(E)
      • S(j);S_CUTR(e)::B(H),XP(f)
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