MESON Chess Problem Database

Problem Display
PID: 265280 (3r4/3QPp2/2Nn1P2/1b1Rp3/4kp2/1B6/4nPP1/1NbK4 w - - 0 1)

Bottacchi, Antonio

L'Italia Scacchistica, 1949

3r4/3QPp2/2Nn1P2/1b1Rp3/4kp2/1B6/4nPP1/1NbK4

#2

10 + 9

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Bb2
      • 2.Sd2#
    • 1...Bd2
      • 2.Sxd2#
    • 1...Ba3
      • 2.Sd2#
    • 1...Be3
      • 2.f3#
    • 1...Bd3
      • 2.Rxe5#
    • 1...Sg1
      • 2.Sc3#
    • 1...Sc3+
      • 2.Sxc3#
    • 1...Sg3
      • 2.Sc3#
    • 1...Sc4
      • 2.Bc2#
    • 1...Sf5
      • 2.Rxe5#
    • 1...Sb7
      • 2.Rxe5#
    • 1...Sc8
      • 2.Rxe5#
    • 1...Se8
      • 2.Rxe5#
  • Tries
    • 1.Bc2+?
      • 1...Bd3
        • 2.Rxe5#
      • 1...Kxd5!
    • 1.Qe6?
      • threat
        • 2.Qxe5#
      • 1...Sc3+
        • 2.Sxc3#
      • 1...Sd4
        • 2.Rxd4#
      • 1...Bb2
        • 2.Sd2#
      • 1...Sc4
        • 2.Bc2#
      • 1...fxe6!
    • 1.e8Q?
      • threat
        • 2.Qxe5#
      • 1...Sc3+
        • 2.Sxc3#
      • 1...Sxe8
        • 2.Rxe5#
      • 1...Sd4
        • 2.Rxd4#
      • 1...Bb2
        • 2.Sd2#
      • 1...Sc4
        • 2.Bc2#
      • 1...Rxe8!
  • Keys
    • 1.Qh3!
      • threat
        • 2.Rxe5#
      • 1...Sc3+
        • 2.Sxc3#
      • 1...Bxc6
        • 2.Qd3#
      • 1...Sc4
        • 2.Qd3#
      • 1...f3
        • 2.Qxf3#
      • 1...Bb2
        • 2.Sd2#
      • 1...Be3
        • 2.f3#
      • 1...Sg3
        • 2.Sc3#
      • 1...Sf5
        • 2.Qf3#
      • 1...Sb7
        • 2.Qh7#
      • 1...Sc8
        • 2.Qh7#
      • 1...Se8
        • 2.Qh7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 5
    • ADDED MATES = 2
    • REMOVED MATES = 4
  • Sets
    • B(a);N_GUARD::S(A)
    • B(a);N_GUARD::S(A),XB(a)
    • B(a);SBLOCK::P(C)
    • B(e);SBLOCK::R1(F),XP(f)
    • S(b);N_GUARD::S(A)
    • S(b);CHECK,N_GUARD::S(A),XS(b)
    • S(g);S_CUTB(e)::B(E)
    • S(g);::R1(F),XP(f)
  • Tries
    • Try
      • B(E);CHECK
      • Vars
        • B(e);P_SPINB(e)::R1(F),XP(f)
      • Refutation
        • K(c);P_SPINS(g),S_FLIGHT,XR(F)
    • Try
      • Q(I);P_PINP(f)
      • Threat
        • QAR1(I),XP(f)
      • Vars
        • S(b);CHECK,N_GUARD::S(A),XS(b)
        • S(b);N_GUARD::R1(F),XS(b)
        • B(a);N_GUARD::S(A)
        • S(g);P_PINR(F),S_CUTB(e)::B(E)
      • Refutation
        • P(h);N_SPINP(f),XQ(I)
    • Try
      • P(J);P_PINP(f)
      • Threat
        • QAR1(J),XP(f)
      • Vars
        • S(b);CHECK,N_GUARD::S(A),XS(b)
        • S(g);N_SPINP(f),XQ(J)::R1(F),XP(f)
        • S(b);N_GUARD::R1(F),XS(b)
        • B(a);N_GUARD::S(A)
        • S(g);S_CUTB(e)::B(E)
      • Refutation
        • R(i);N_SPINP(f),XQ(J)
  • Actual
    • Q(I);
    • Threat
      • R1(F),XP(f)
    • Vars
      • S(b);CHECK,N_GUARD::S(A),XS(b)
      • B(e);N_GUARD,XS(G)::QAB1(I)
      • S(g);P_PINR(F),S_CUTB(e)::QAB1(I)
      • P(d);::QAB1(I),XP(d)
      • B(a);N_GUARD::S(A)
      • B(a);SBLOCK::P(C)
      • S(b);N_GUARD::S(A)
      • S(g);P_PINR(F),SBLOCK::QAB1(I)
      • S(g);N_GUARD,P_PINR(F)::QAB(I)
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