MESON Chess Problem Database

Problem Display
PID: 269750 (7B/q6p/2R4b/4rn2/pNpk1N1Q/3b1P2/1P2P3/R3KB1n w Q - 0 1)

Chicco, Adriano

Journal de Geneve, 1935

7B/q6p/2R4b/4rn2/pNpk1N1Q/3b1P2/1P2P3/R3KB1n

#2

11 + 10

15601 Albrecht-Leiss-Degener Collection 2023

SOLUTION

  • SOUND
  • Sets
    • 1...Ke3
      • 2.Sg2#
    • 1...Bc2
      • 2.Sxc2#
    • 1...Bxe2
      • 2.Sc2#
    • 1...Se3
      • 2.Se6#
  • Tries
    • 1.Sfxd3+?
      • 1...Ke3
        • 2.Sc2#
      • 1...Bf4
        • 2.Qxf4#
      • 1...Sxh4!
    • 1.Bxe5+?
      • 1...Ke3
        • 2.Sbd5#
        • 2.Sg2#
        • 2.Sfd5#
      • 1...Kxe5!
    • 1.Rd1?
      • threat
        • 2.Sc2#
      • 1...Ke3
        • 2.Sg2#
      • 1...Bxf4
        • 2.Qxf4#
      • 1...Se3
        • 2.Se6#
      • 1...Qa5!
    • 1.Qf2+?
      • 1...Se3
        • 2.Se6#
      • 1...Sxf2!
    • 1.Qd8+?
      • 1...Ke3
        • 2.Sg2#
      • 1...Qd7
        • 2.Qb6#
      • 1...Sd6!
    • 1.e3+?
      • 1...Sxe3
        • 2.Se2#
        • 2.Se6#
      • 1...Kxe3!
  • Keys
    • 1.0-0-0!
      • threat
        • 2.Sc2#
      • 1...Bxf4+
        • 2.Qxf4#
      • 1...Ke3
        • 2.Sg2#
      • 1...Se3
        • 2.Se6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 2
  • Sets
    • K(e);N_PINP(E),N_SPINR(f),S_CUTB(b),S_CUTB(h),S_CUTS(g),S_FLIGHT::S(H)
    • B(b);N_GUARD::S(G),XB(b)
    • B(b);N_GUARD,XP(E)::S(G)
    • S(g);N_PINP(E),SBLOCK::QAR(I)+S(H),DCHECK
  • Tries
    • Try
      • S(H);CHECK,XB(b)
      • Vars
        • K(e);N_GUARD,N_PINP(E),N_SPINR(f),S_FLIGHT::S(G)
        • B(h);N_GUARD,P_SPINB(h)::QAR2(I),XB(h)
      • Refutation
        • S(g);XQ(I)
    • Try
      • B(K);CHECK,N_SPINP(E),XR(f)
      • Refutation
        • K(e);S_FLIGHT,XB(K)
    • Try
      • R(A);P_PINB(b)
      • Threat
        • S(G)
      • Vars
        • K(e);N_PINP(E),N_SPINB(b),N_SPINR(f),S_CUTB(h),S_CUTS(g),S_FLIGHT::S(H)
        • B(h);OGATE,XS(H)::QAR2(I),XB(h)
        • S(g);N_PINP(E),SBLOCK::QAR(I)+S(H),DCHECK
      • Refutation
        • Q(i);P_PINS(G)
    • Try
      • Q(I);CHECK
      • Vars
        • S(g);N_PINP(E),P_SPINS(g)::S(H)
      • Refutation
        • S(a);XQ(I)
    • Try
      • Q(I);CHECK
      • Vars
        • K(e);N_PINP(E),N_SPINR(f),S_CUTQ(i),S_CUTS(g),S_FLIGHT::S(H)
        • Q(i);N_GUARD,P_SPINQ(i)::QAB(I)
      • Refutation
        • S(g);P_SPINS(g)
    • Try
      • P(E);CHECK
      • Refutation
        • K(e);N_SPINR(f),S_FLIGHT,XP(E)
  • Actual
    • K(B);0-0-0,N_SPINP(E),P_PINB(b),P_SPINS(H)
    • Threat
      • S(G)
    • Vars
      • B(h);CHECK,OGATE,XS(H)::QAR2(I),XB(h)
      • K(e);N_PINS(H),N_SPINB(b),N_SPINR(f),S_FLIGHT::S(H)
      • S(g);N_PINS(H),SBLOCK::QAR(I)+S(H),DCHECK
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