MESON Chess Problem Database

Problem Display
PID: 159695 (5Q2/5B2/8/p3R3/P2B4/2pk4/8/Rn2K3 w Q - 0 1)

Righi, Mario

Schach, 2000

5Q2/5B2/8/p3R3/P2B4/2pk4/8/Rn2K3

#2

7 + 4

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd4
      • 2.Qd6#
    • 1...Sa3
      • 2.0-0-0#
  • Tries
    • 1.Bg6+?
      • 1...Kxd4
        • 2.Qc5#
        • 2.Qf4#
      • 1...Kc4!
    • 1.Rxb1?
      • 1...Kc2
        • 2.Bg6#
      • 1...Kxd4
        • 2.Qd6#
      • 1...c2!
    • 1.Qb4?
      • threat
        • 2.Bg6#
      • 1...Kc2
        • 2.Qxb1#
      • 1...Sd2
        • 2.Qxc3#
      • 1...axb4!
    • 1.Qc5?
      • threat
        • 2.Bg6#
      • 1...Sd2
        • 2.Qxc3#
      • 1...Kc2!
  • Keys
    • 1.Qa3!
      • 1...Kc2
        • 2.Bg6#
      • 1...Kxd4
        • 2.Qd6#
      • 1...Sxa3
        • 2.0-0-0#
      • 1...Sd2
        • 2.Qxc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);OGATEB,P-FLIGHT,XB(D)::QAR2(G)
    • S(a);::0-0-0
  • Tries
    • Try
      • B(F);CHECK
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(A);XS(a)
      • Vars
        • K(c);S_FLIGHT::B(F)
        • K(c);OGATEB,P-FLIGHT,XB(D)::QAR2(G)
      • Refutation
        • P(b);
    • Try
      • Q(G);
      • Threat
        • B(F)
      • Vars
        • K(c);S_FLIGHT::QAB1(G),XS(a)
        • S(a);N_GUARD::QAR1(G),XP(b)
      • Refutation
        • P(d);XQ(G)
    • Try
      • Q(G);
      • Threat
        • B(F)
      • Vars
        • S(a);N_GUARD::QAR1(G),XP(b)
      • Refutation
        • K(c);P_SPINP(b),S_FLIGHT
  • Actual
    • Q(G);P_PINP(b)
    • Vars
      • K(c);N_SPINP(b),S_FLIGHT::B(F)
      • K(c);N_SPINP(b),OGATEB,P-FLIGHT,XB(D)::QAR2(G)
      • S(a);N_SPINP(b),XQ(G)::0-0-0
      • S(a);N_GUARD::QAR1(G),XP(b)
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