MESON Chess Problem Database

Problem Display
PID: 266811 (8/1Kp5/1p5Q/4rR1q/3kp3/B3R3/B1n1r1n1/2N1Nbb1 w - - 0 1)

Castellari, Umberto

La Scacchiera, 1951

8/1Kp5/1p5Q/4rR1q/3kp3/B3R3/B1n1r1n1/2N1Nbb1

#2

8 + 11

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Ra5
      • 2.Bb2#
    • 1...Re6
      • 2.Bb2#
    • 1...Re7
      • 2.Bb2#
    • 1...Re8
      • 2.Bb2#
    • 1...c5
      • 2.Bb2#
  • Tries
    • 1.Sxe2+?
      • 1...Bxe2
        • 2.Sxc2#
      • 1...Qxe2!
    • 1.Sb3+?
      • 1...Kd5
        • 2.Qc6#
      • 1...Kc4!
  • Keys
    • 1.Qc6!
      • threat
        • 2.Qc3#
      • 1...Kxe3
        • 2.Qc3#
      • 1...Rxe3
        • 2.Sxc2#
      • 1...Bxe3
        • 2.Sb3#
        • 2.Bb2#
        • 2.Qc4#
      • 1...Scxe3
        • 2.Sb3#
      • 1...Sgxe3
        • 2.Sb3#
        • 2.Bb2#
      • 1...Rc5
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 5
  • Sets
    • R(h);::B(D)
    • P(k);SBLOCK::B(D)
  • Tries
    • Try
      • S(A);CHECK,XR(d)
      • Vars
        • B(a);XS(A)::S(B),XS(c)
      • Refutation
        • Q(i);XS(A)
    • Try
      • S(A);CHECK
      • Vars
        • K(f);N_GUARD,P-FLIGHT,P_SPINR(h)::QAB1(G)
      • Refutation
        • K(f);P-FLIGHT
  • Actual
    • Q(G);
    • Threat
      • QAB1(G)
    • Vars
      • K(f);S_FLIGHT,XR(E)::QAR2(G)
      • R(d);N_GUARD,XR(E)::S(B),XS(c)
      • S(c);SBLOCK,XR(E)::S(A)
      • R(h);N_GUARD::QAR1(G),XP(g)
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Developed and maintained by Brian Stephenson.
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