MESON Chess Problem Database

Problem Display
PID: 265045 (BK6/4p3/4RB2/2p1N2R/2bk1q2/2p4Q/3n2N1/8 w - - 0 1)

Bottacchi, Antonio

4th HM., Il Problema, 1932

BK6/4p3/4RB2/2p1N2R/2bk1q2/2p4Q/3n2N1/8

#2

8 + 7

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qh2
      • 2.Qe3#
    • 1...Qe3
      • 2.Qxe3#
    • 1...Qxe5+
      • 2.Bxe5#
    • 1...Qh6
      • 2.Sc6#
    • 1...Qf1
      • 2.Sc6#
      • 2.Qe3#
    • 1...Qf2
      • 2.Sc6#
    • 1...Qe4
      • 2.Sc6#
    • 1...Qg4
      • 2.Sc6#
      • 2.Qe3#
    • 1...Qh4
      • 2.Sc6#
      • 2.Qe3#
    • 1...Qf5
      • 2.Qe3#
    • 1...Qxf6
      • 2.Sc6#
      • 2.Qe3#
    • 1...Ba2
      • 2.Qd3#
    • 1...Bb3
      • 2.Qd3#
    • 1...Bd3
      • 2.Qxd3#
    • 1...Bd5
      • 2.Qd3#
    • 1...Bxe6
      • 2.Qd3#
  • Tries
    • 1.Rh4?
      • threat
        • 2.Qe3#
      • 1...Sf1
        • 2.Rxf4#
      • 1...Sf3
        • 2.Rxf4#
      • 1...Se4!
    • 1.Rd6+?
      • 1...Bd5
        • 2.Qd3#
      • 1...exd6!
  • Keys
    • 1.Se1!
      • threat
        • 2.Sc2#
      • 1...Qxe5+
        • 2.Bxe5#
      • 1...Bd5
        • 2.Qd3#
      • 1...Qe4
        • 2.Sc6#
      • 1...Qf5
        • 2.S5f3#
      • 1...Bb3
        • 2.Qd3#
      • 1...Bd3
        • 2.Qxd3#
      • 1...c2
        • 2.Sxc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 6
  • Sets
    • Q(e);N_GUARD::QAB1(B)
    • Q(e);N_GUARD,N_PINS(C)::QAB1(B),XQ(e)
    • Q(e);CHECK,OGATE,P_SPINQ(e),XS(C)::B(F),XQ(e)
    • Q(e);N_PINS(C)::B(F)+S(C),DCHECK
    • Q(e);N_GUARD,N_PINS(C)::QAB1(B)
    • B(c);N_GUARD::QAR1(B)
    • B(c);N_GUARD::QAR1(B),XB(c)
    • B(c);N_GUARD,XR(E)::QAR1(B)
  • Tries
    • Try
      • R(D);P_PINQ(e)
      • Threat
        • QAB1(B)
      • Vars
        • S(a);N_GUARD::R(D),XQ(e)
      • Refutation
        • S(a);N_SPINQ(e)
    • Try
      • R(E);CHECK,N_SPINS(C)
      • Vars
        • B(c);P_SPINB(c)::QAR1(B)
      • Refutation
        • P(g);XR(E)
  • Actual
    • S(A);
    • Threat
      • S(A)
    • Vars
      • Q(e);CHECK,OGATE,P_SPINQ(e),XS(C)::B(F),XQ(e)
      • B(c);N_GUARD::QAR1(B)
      • Q(e);N_PINS(C)::B(F)+S(C),DCHECK
      • B(c);N_GUARD::QAR1(B),XB(c)
      • P(b);::S(A),XP(b)
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