MESON Chess Problem Database

Problem Display
PID: 267288 (K2QR1b1/2p5/4ppB1/2n1qNB1/2P1k1p1/2p3P1/2P2pP1/4n3 w - - 0 1)

Ceriani, Luigi

L'Italia Scacchistica, 1929

K2QR1b1/2p5/4ppB1/2n1qNB1/2P1k1p1/2p3P1/2P2pP1/4n3

#2

10 + 11

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qxg3
      • 2.Qd4#
      • 2.Qd5#
    • 1...Qd4
      • 2.Qxd4#
    • 1...Qf4
      • 2.Qd4#
      • 2.Qd5#
    • 1...Qd5+
      • 2.Qxd5#
    • 1...Qxf5
      • 2.Qd5#
  • Tries
    • 1.Se3+?
      • 1...Qf5
        • 2.Qd5#
      • 1...f5!
    • 1.Sd4+?
      • 1...Qf5
        • 2.Qd5#
      • 1...f5!
    • 1.Sh4+?
      • 1...Qf5
        • 2.Qd5#
      • 1...f5!
    • 1.Sh6+?
      • 1...Qf5
        • 2.Qd5#
      • 1...f5!
    • 1.Sg7+?
      • 1...Qf5
        • 2.Qd5#
      • 1...f5!
  • Keys
    • 1.Qd1!
      • threat
        • 2.Sd6#
        • 2.Qe2#
      • 1...Qd5+
        • 2.Qxd5#
      • 1...Qxg3
        • 2.Qd4#
        • 2.Qd5#
      • 1...Qxf5
        • 2.Qd5#
      • 1...Sxc2
        • 2.Sd6#
      • 1...Sxg2
        • 2.Sd6#
      • 1...exf5
        • 2.Qxg4#
      • 1...fxg5
        • 2.Qe2#
      • 1...Qd4
        • 2.Qxd4#
      • 1...Qf4
        • 2.Qd4#
        • 2.Qd5#
      • 1...Qd6
        • 2.Qe2#
      • 1...f1Q
        • 2.Sd6#
      • 1...f1S
        • 2.Sd6#
      • 1...f1B
        • 2.Sd6#
      • 1...Sed3
        • 2.Qe2#
      • 1...Scd3
        • 2.Qe2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 10
    • REMOVED MATES = 0
  • Sets
    • Q(g);N_GUARD,P_SPINP(h)::QAR1(I),XQ(g)
    • Q(g);CHECK,N_GUARD,P_SPINP(h)::QAB1(I),XQ(g)
    • Q(g);N_GUARD,P_SPINP(h),P_SPINQ(g),XS(E)::QAB1(I)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • Q(g);P_SPINP(h),P_SPINQ(g)::QAB1(I)
      • Refutation
        • P(i);P_SPINP(i)
    • Try
      • S(E);CHECK
      • Vars
        • Q(g);P_SPINP(h),P_SPINQ(g)::QAB1(I)
      • Refutation
        • P(i);P_SPINP(i)
    • Try
      • S(E);CHECK
      • Vars
        • Q(g);P_SPINP(h),P_SPINQ(g)::QAB1(I)
      • Refutation
        • P(i);P_SPINP(i)
    • Try
      • S(E);CHECK
      • Vars
        • Q(g);P_SPINP(h),P_SPINQ(g)::QAB1(I)
      • Refutation
        • P(i);P_SPINP(i)
    • Try
      • S(E);CHECK
      • Vars
        • Q(g);P_SPINP(h),P_SPINQ(g)::QAB1(I)
      • Refutation
        • P(i);P_SPINP(i)
  • Actual
    • Q(I);
    • Threat
      • DUALS(2)
    • Vars
      • Q(g);CHECK,N_GUARD,P_SPINP(h)::QAB1(I),XQ(g)
      • Q(g);N_GUARD,P_SPINP(h),P_SPINQ(g),XS(E)::QAB1(I)
      • S(a);XP(A)::B(G)+S(E),DCHECK
      • S(a);XP(B)::B(G)+S(E),DCHECK
      • P(h);P_SPINP(h),P_SPINQ(g),XS(E)::QAR2(I),XP(e)
      • P(i);XB(F)::QAR2(I)
      • Q(g);N_GUARD,P_SPINP(h)::QAR1(I),XQ(g)
      • Q(g);P_SPINP(h)::QAR2(I)
      • P(b);::B(G)+S(E),DCHECK
      • S(a);::QAR2(I)
      • S(f);::QAR2(I)
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