MESON Chess Problem Database

Problem Display
PID: 267490 (5Q1K/2n1p3/4p3/2p1N3/3nk1NR/1P3ppp/1bP4r/1B1R4 w - - 0 1)

Bottacchi, Antonio

6th Prize, L'Italia Scacchistica 10. TT, 1919

5Q1K/2n1p3/4p3/2p1N3/3nk1NR/1P3ppp/1bP4r/1B1R4

#2

9 + 11

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Sxc2
      • 2.Qxf3#
    • 1...Se2
      • 2.Qxf3#
      • 2.c3#
      • 2.c4#
    • 1...Sxb3
      • 2.Qxf3#
    • 1...Sdb5
      • 2.Qxf3#
    • 1...Sc6
      • 2.Qxf3#
  • Tries
    • 1.Se3+?
      • 1...Kxe5
        • 2.Qf4#
      • 1...Kxe3!
    • 1.Rxd4+?
      • 1...Bxd4
        • 2.Qxf3#
      • 1...cxd4
        • 2.Qxf3#
      • 1...Kxd4!
    • 1.c3+?
      • 1...Kd5
        • 2.Qd8#
      • 1...Sc2
        • 2.Qxf3#
      • 1...Rc2!
    • 1.c4+?
      • 1...Sc2
        • 2.Qxf3#
      • 1...Rc2!
  • Keys
    • 1.Sc4!
      • threat
        • 2.Sge3#
      • 1...Sxc2+
        • 2.Sge5#
      • 1...Se2+
        • 2.c3#
      • 1...Sxb3+
        • 2.Sge5#
      • 1...Sdb5+
        • 2.Sge5#
      • 1...Sf5+
        • 2.Sf6#
      • 1...Sc6+
        • 2.Sge5#
      • 1...Kd5
        • 2.Qxf3#
      • 1...Sd5
        • 2.Sf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 4
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(f);N_GUARD,P_PINS(G),P_SPINS(f),XP(C)::QAB1(H),XP(c)
    • S(f);N_GUARD,P_PINS(G),XP(D)::QAB1(H),XP(c)
    • S(f);N_GUARD,P_PINS(G)::QAB1(H),XP(c)
  • Tries
    • Try
      • S(E);CHECK
      • Vars
        • K(g);P-FLIGHT,XS(G)::QAB1(H)
      • Refutation
        • K(g);P-FLIGHT,XS(E)
    • Try
      • R(B);CHECK,XS(f)
      • Vars
        • B(a);P_PINS(G),SBLOCK,XR(B)::QAB1(H),XP(c)
        • P(h);SBLOCK,XR(B)::QAB1(H),XP(c)
      • Refutation
        • K(g);P-FLIGHT,XR(B)
    • Try
      • P(C);CHECK
      • Vars
        • K(g);N_GUARD,P_SPINS(f),S_CUTR(b),S_FLIGHT::QAR(H)
        • S(f);P_SPINS(f)::QAB1(H),XP(c)
      • Refutation
        • R(b);P_SPINR(b)
    • Try
      • P(C);CHECK
      • Vars
        • S(f);P_PINS(G),P_SPINS(f)::QAB1(H),XP(c)
      • Refutation
        • R(b);P_SPINR(b)
  • Actual
    • S(G);
    • Threat
      • R(F)+S(E)
    • Vars
      • S(f);CHECK,P_SPINS(f),XP(C)::R(F)+S(E)
      • S(f);CHECK,N_GUARD,S_CUTR(b)::B(A)+P(C)
      • S(f);CHECK,XP(D)::R(F)+S(E)
      • S(f);CHECK::R(F)+S(E)
      • S(f);CHECK,SBLOCK::R(F)+S(E),DCHECK
      • K(g);N_GUARD,P_SPINS(f),S_FLIGHT::QAB(H),XP(c)
      • S(j);SBLOCK::R(F)+S(E),DCHECK
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