MESON Chess Problem Database

Problem Display
PID: 147712 (2Q5/3q1B2/3p1p1K/R7/1N3k1N/7p/2P1bP2/4Rn2 w - - 0 1)

Chicco, Adriano

1st HM., Western Morning News, 1930

2Q5/3q1B2/3p1p1K/R7/1N3k1N/7p/2P1bP2/4Rn2

#2

9 + 7

35 L'Italia Scacchistica 1930
14868 Pirnie Collection 2013

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Qc4#
    • 1...Qa4
      • 2.Qf5#
    • 1...Qf5
      • 2.Qxf5#
    • 1...Qc6
      • 2.Qf5#
    • 1...Qe8
      • 2.Qf5#
    • 1...Qa7
      • 2.Qf5#
    • 1...Qb7
      • 2.Qf5#
    • 1...Qc7
      • 2.Qf5#
    • 1...Qe7
      • 2.Qf5#
    • 1...Qxf7
      • 2.Qf5#
    • 1...Qd8
      • 2.Qf5#
    • 1...Bd1
      • 2.Qc4#
    • 1...Bc4
      • 2.Qxc4#
    • 1...Bg4
      • 2.Sd3#
      • 2.Sd5#
      • 2.Qc4#
    • 1...Bh5
      • 2.Qc4#
  • Tries
    • 1.Sd3+?
      • 1...Ke4
        • 2.Qc4#
      • 1...Kg4
        • 2.Ra4#
        • 2.Qc4#
      • 1...Bxd3!
    • 1.Rf5+?
      • 1...Ke4
        • 2.Qc4#
      • 1...Qxf5
        • 2.Qxf5#
      • 1...Kg4!
  • Keys
    • 1.Ra4!
      • threat
        • 2.Sd3#
      • 1...Ke4
        • 2.Sc6#
      • 1...Kg4
        • 2.Sd3#
      • 1...Ke5
        • 2.Sd3#
      • 1...Qxa4
        • 2.Qf5#
      • 1...Bd3
        • 2.Sxd3#
        • 2.Sd5#
      • 1...Bc4
        • 2.Qxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 11
  • Sets
    • K(d);P-FLIGHT,P_SPINB(b)::QAR2(I)
    • Q(g);OGATE::QAR1(I)
    • Q(g);OGATE::QAR1(I),XQ(g)
    • Q(g);OGATE,XB(H)::QAR1(I)
    • B(b);N_GUARD::QAR(I)
    • B(b);N_GUARD::QAR(I),XB(b)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(d);P-FLIGHT,P_SPINB(b)::QAR2(I)
      • Refutation
        • B(b);XS(D)
    • Try
      • R(F);CHECK
      • Vars
        • K(d);P-FLIGHT,P_SPINB(b)::QAR2(I)
        • Q(g);OGATE,XR(F)::QAR1(I),XQ(g)
      • Refutation
        • K(d);P-FLIGHT
  • Actual
    • R(F);
    • Threat
      • R(F)+S(D),DCHECK
    • Vars
      • K(d);P-FLIGHT,P_SPINB(b)::R(F)+S(D)
      • K(d);P-FLIGHT,P_SPINQ(g)::R(F)+S(D)
      • K(d);P_SPINB(b),S_FLIGHT::S(D)
      • Q(g);OGATE,XR(F)::QAR1(I)
      • B(b);N_GUARD::QAR(I),XB(b)
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