MESON Chess Problem Database

Problem Display
PID: 71403 (4Q3/4P3/2p4B/1P1RpP1P/R1p1k3/K2bN2r/2N1p1P1/1B6 w - - 0 1)

Castellari, Umberto

3rd HM., Grantham Journal, 1931

4Q3/4P3/2p4B/1P1RpP1P/R1p1k3/K2bN2r/2N1p1P1/1B6

#2

13 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Bxc2
      • 2.Bxc2#
      • 2.Rxc4#
  • Tries
    • 1.Rd6?
      • threat
        • 2.Qxc6#
      • 1...cxb5
        • 2.Qc6#
        • 2.Qa8#
      • 1...c5
        • 2.Qc6#
        • 2.Qa8#
      • 1...Rxe3!
    • 1.Rd8?
      • threat
        • 2.Qxc6#
      • 1...cxb5
        • 2.Qc6#
      • 1...c5
        • 2.Qc6#
      • 1...Rxe3!
    • 1.Qxc6?
      • threat
        • 2.Rd4#
        • 2.Rc5#
        • 2.Rd6#
        • 2.Rd7#
        • 2.Rd8#
      • 1...Bxc2
        • 2.Bxc2#
        • 2.Rxc4#
        • 2.Rd1#
        • 2.Rd2#
        • 2.Rd6#
        • 2.Rd7#
        • 2.Rd8#
        • 2.Qxc4#
      • 1...Rxe3!
    • 1.Qb8?
      • threat
        • 2.Rxe5#
        • 2.Qxe5#
      • 1...Bxc2
        • 2.Bxc2#
        • 2.Rxc4#
        • 2.Qxe5#
      • 1...cxd5!
    • 1.Qh8?
      • threat
        • 2.Rxe5#
        • 2.Qxe5#
      • 1...Bxc2
        • 2.Bxc2#
        • 2.Rxc4#
        • 2.Qxe5#
      • 1...cxd5!
  • Keys
    • 1.Sxc4!
      • threat
        • 2.Rxe5#
      • 1...Bxc2+
        • 2.Se3#
      • 1...Bxc4+
        • 2.Se3#
      • 1...Kxd5
        • 2.Qxc6#
      • 1...Kxf5
        • 2.Qg6#
      • 1...cxd5
        • 2.Sd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • R(H);
      • Threat
        • QAB(M),XP(g)
      • Refutation
        • R(c);XS(E)
    • Try
      • R(H);
      • Threat
        • QAB(M),XP(g)
      • Vars
        • P(g);XP(G)::QAB(M)
        • P(g);::QAB(M)
      • Refutation
        • R(c);XS(E)
    • Try
      • Q(M);XP(g)
      • Threat
        • DUALS(5)
      • Refutation
        • R(c);XS(E)
    • Try
      • Q(M);
      • Threat
        • DUALS(2)
      • Refutation
        • P(g);XR(H)
    • Try
      • Q(M);
      • Threat
        • DUALS(2)
      • Refutation
        • P(g);XR(H)
  • Actual
    • S(E);XP(d)
    • Threat
      • R1(H),XP(f)
    • Vars
      • B(b);CHECK,N_GUARD,P_SPINB(b),XS(B)::R(F)+S(E)
      • B(b);CHECK,P_SPINB(b),XS(E)::B(A)+S(B)
      • K(e);OGATEB,S_FLIGHT,XR(H)::QAB1(M),XP(g)
      • K(e);OGATEB,P_SPINP(f),S_FLIGHT,XP(I)::QAB1(M)
      • P(g);SBLOCK,XR(H)::R(F)+S(E),DCHECK
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