MESON Chess Problem Database

Problem Display
PID: 95686 (1Q6/2RK4/1pp2p2/Rn1nkB2/2b2pP1/p1P1p3/8/B7 w - - 0 1)

Pasqualini, Giuseppe

L'Italia Scacchistica, 1921

1Q6/2RK4/1pp2p2/Rn1nkB2/2b2pP1/p1P1p3/8/B7

#2

8 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Sbxc3
      • 2.Bxc3#
    • 1...Sd4
      • 2.Rxc6#
      • 2.Rca7#
      • 2.Rb7#
      • 2.Rc8#
      • 2.cxd4#
    • 1...Sa7
      • 2.Rxc6#
      • 2.Rcxa7#
      • 2.Rb7#
      • 2.Rc8#
      • 2.Qe8#
    • 1...Sbxc7
      • 2.Qxc7#
  • Tries
    • 1.Rxb5?
      • threat
        • 2.Rxc6#
        • 2.Ra7#
        • 2.Rb7#
        • 2.Rc8#
        • 2.Qe8#
      • 1...cxb5
        • 2.Rc5#
      • 1...f3
        • 2.Rxc6#
        • 2.Ra7#
        • 2.Rb7#
        • 2.Rc8#
      • 1...c5
        • 2.Rcxc5#
      • 1...Bxb5!
    • 1.Rxc6+?
      • 1...Sd6
        • 2.Qxd6#
      • 1...Sbc7
        • 2.Re6#
        • 2.Qxc7#
      • 1...Sdc7!
    • 1.Rca7+?
      • 1...Sd6
        • 2.Qxd6#
      • 1...Sbc7
        • 2.Qxc7#
      • 1...Sdc7!
    • 1.Rb7+?
      • 1...Sd6
        • 2.Qxd6#
      • 1...Sbc7
        • 2.Qxc7#
      • 1...Sdc7!
    • 1.Rc8+?
      • 1...Sd6
        • 2.Re8#
        • 2.Qxd6#
      • 1...Sbc7
        • 2.Re8#
        • 2.Qxc7#
      • 1...Sdc7!
  • Keys
    • 1.Kxc6!
      • threat
        • 2.Re7#
      • 1...Sd4+
        • 2.cxd4#
      • 1...Sa7+
        • 2.Rcxa7#
      • 1...Sb4+
        • 2.cxb4#
      • 1...Se7+
        • 2.Rxe7#
      • 1...Sbxc3
        • 2.Bxc3#
      • 1...Sbxc7
        • 2.Qxc7#
      • 1...Sdxc3
        • 2.Bxc3#
        • 2.Rd7#
      • 1...Sdxc7
        • 2.Qxc7#

There are these versions: 198759

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
    • S(e);OGATE,P_SPINS(e),XP(B)::B(A),XS(e)
    • S(e);OGATE,P_SPINS(f),XR(F)::QAB(H),XS(e)
  • Tries
    • Try
      • R(D);P_PINS(f),XS(e)
      • Threat
        • DUALS(5)
      • Vars
        • P(i);N_SPINS(f),OGATE,XR(D)::QAB(H)+R(F)
        • P(i);N_SPINS(f),OGATE::QAB(H)+R(F),XP(i)
      • Refutation
        • B(c);N_SPINS(f),XR(D)
    • Try
      • R(F);CHECK,XP(i)
      • Vars
        • S(e);N_GUARD,P_SPINS(f)::QAB1(H),XS(e)
      • Refutation
        • S(f);P_SPINS(e)
    • Try
      • R(F);CHECK
      • Vars
        • S(e);N_GUARD,P_SPINS(f)::QAB1(H),XS(e)
        • S(e);N_GUARD,P_SPINS(f)::QAB(H),XS(e)
      • Refutation
        • S(f);P_SPINS(e)
    • Try
      • R(F);CHECK
      • Vars
        • S(e);N_GUARD,P_SPINS(f)::QAB1(H),XS(e)
        • S(e);N_GUARD,P_SPINS(f)::QAB(H),XS(e)
      • Refutation
        • S(f);P_SPINS(e)
    • Try
      • R(F);CHECK
      • Refutation
        • S(f);P_SPINS(e)
  • Actual
    • K(G);S_FLIGHT,XP(i)
    • Threat
      • QAB(H)+R(F),DCHECK
    • Vars
      • S(e);CHECK,OGATE,P_SPINS(f)::P(B),XS(e)
      • S(e);CHECK,N_GUARD,P_SPINS(f)::QAB(H)+R(F),XS(e)
      • S(f);CHECK,OGATE,P_SPINS(e)::B(A)+P(B),XS(f)
      • S(f);CHECK,P_SPINS(e)::QAB(H)+R(F),DCHECK,XS(f)
      • S(e);OGATE,P_SPINS(e),XP(B)::B(A),XS(e)
      • S(e);OGATE,P_SPINS(f),XR(F)::QAB(H),XS(e)
      • S(f);OGATE,P_SPINS(e),XR(F)::QAB(H),XS(f)
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