MESON Chess Problem Database

Problem Display
PID: 92379 (B1Kn4/B7/P1NpP3/R1Nk4/Rn2p3/1P6/r1pq4/2bQ3b w - - 0 1)

Stocchi, Ottavio

Shakhmaty, 1931

B1Kn4/B7/P1NpP3/R1Nk4/Rn2p3/1P6/r1pq4/2bQ3b

#2

11 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qd4
      • 2.Qxd4#
    • 1...Sd3
      • 2.Rd4#
    • 1...e3
      • 2.Qh5#
  • Tries
    • 1.Sb7+?
      • 1...Kxc6
        • 2.Sxd8#
      • 1...Kxe6!
    • 1.Sxb4+?
      • 1...Kd4
        • 2.Sxe4#
      • 1...Ke5!
    • 1.Qxd2+?
      • 1...Sd3
        • 2.Rd4#
      • 1...Bxd2!
  • Keys
    • 1.Kd7!
      • threat
        • 2.Sd3#
        • 2.Sb7#
      • 1...Rxa4
        • 2.Sxa4#
      • 1...Sxa6
        • 2.Sxa6#
      • 1...Sbxc6
        • 2.Sxe4#
      • 1...Sdxc6
        • 2.Sd3#
      • 1...Sxe6
        • 2.Sxe6#
      • 1...dxc5
        • 2.Rxc5#
      • 1...Qd3
        • 2.Sxd3#
        • 2.Sb7#
      • 1...Qd4
        • 2.Sb7#
        • 2.Qxd4#
      • 1...Sd3
        • 2.Rd4#
      • 1...Sb7
        • 2.Sxb7#
      • 1...e3
        • 2.Qh5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 1
  • Sets
    • Q(e);OGATE::QAR1(A),XQ(e)
    • S(f);N_SPINQ(e),OGATE::R1(C)
    • P(g);::QAR(A)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(h);N_SPINQ(e),S_FLIGHT,XS(G)::B(J)+S(E),DCHECK,XS(j)
      • Refutation
        • K(h);N_SPINQ(e),S_FLIGHT,XP(H)
    • Try
      • S(G);CHECK,XS(f)
      • Vars
        • K(h);P-FLIGHT::B(I)+S(E),XP(g)
      • Refutation
        • K(h);N_SPINQ(e),P-FLIGHT
    • Try
      • Q(A);CHECK,XQ(e)
      • Vars
        • S(f);OGATE,P_SPINS(f)::R1(C)
      • Refutation
        • B(a);XQ(A)
  • Actual
    • K(K);S_FLIGHT
    • Threat
      • DUALS(2)
    • Vars
      • R(c);XR(C)::R(D)+S(E),XR(c)
      • S(f);XP(F)::R(D)+S(E),XS(f)
      • S(f);P_SPINS(f),XS(G)::R(D)+S(E),XP(g)
      • S(j);P_SPINS(j),XS(G)::R(D)+S(E)
      • S(j);XP(H)::R(D)+S(E),XS(j)
      • P(i);OGATE,P_SPINP(i),XS(E)::R1(D),XP(i)
      • S(f);N_SPINQ(e),OGATE::R1(C)
      • S(j);::R(D)+S(E),XS(j)
      • P(g);::QAR(A)
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