MESON Chess Problem Database

Problem Display
PID: 267246 (1B3n2/2q1p1R1/4p2p/4Pk2/r3p2r/4P2P/4NNKQ/1B6 w - - 0 1)

Bottacchi, Antonio

6th HM., La Marseillaise, 1946

1B3n2/2q1p1R1/4p2p/4Pk2/r3p2r/4P2P/4NNKQ/1B6

#2

10 + 9

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qa5
      • 2.Sg3#
    • 1...Qxe5
      • 2.Qxe5#
    • 1...Qb6
      • 2.Sg3#
    • 1...Qd8
      • 2.Sg3#
    • 1...Qc1
      • 2.Sg3#
    • 1...Qc2
      • 2.Sg3#
    • 1...Qc3
      • 2.Sg3#
    • 1...Qc4
      • 2.Sg3#
    • 1...Qc5
      • 2.Sg3#
    • 1...Qc6
      • 2.Sg3#
    • 1...Qa7
      • 2.Sg3#
    • 1...Qb7
      • 2.Sg3#
    • 1...Qd7
      • 2.Sg3#
    • 1...Qc8
      • 2.Sg3#
    • 1...Ra1
      • 2.Sd4#
    • 1...Ra2
      • 2.Sd4#
    • 1...Ra3
      • 2.Sd4#
    • 1...Rd4
      • 2.Sxd4#
    • 1...Ra5
      • 2.Sd4#
    • 1...Ra6
      • 2.Sd4#
    • 1...Ra7
      • 2.Sd4#
    • 1...Ra8
      • 2.Sd4#
    • 1...Rxh3
      • 2.Qf4#
    • 1...Rf4
      • 2.Qxf4#
    • 1...Rg4+
      • 2.hxg4#
    • 1...Rh5
      • 2.Qf4#
  • Tries
    • 1.Sg4?
      • threat
        • 2.Sg3#
        • 2.Qf4#
      • 1...Rxg4+
        • 2.hxg4#
      • 1...Qxe5
        • 2.Qxe5#
      • 1...Rxh3
        • 2.Qf4#
      • 1...Qc2
        • 2.Qf4#
      • 1...Ra2
        • 2.Qf4#
      • 1...Sg6!
    • 1.Bxc7?
      • threat
        • 2.Sg3#
      • 1...Rg4+
        • 2.hxg4#
      • 1...Rxh3
        • 2.Qf4#
        • 2.Qxh3#
      • 1...Sg6!
  • Keys
    • 1.Sxe4!
      • threat
        • 2.Sd6#
      • 1...Rg4+
        • 2.hxg4#
      • 1...Qxe5
        • 2.Qxe5#
      • 1...Raxe4
        • 2.Sd4#
      • 1...Rhxe4
        • 2.Qf4#
      • 1...Qc2
        • 2.Sg3#
      • 1...Rf4
        • 2.Qxf4#
      • 1...Qd6
        • 2.Sxd6#
      • 1...Qc6
        • 2.Sg3#
      • 1...Qb7
        • 2.Sg3#
      • 1...Sg6
        • 2.Rf7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 20
  • Sets
    • Q(g);::S(B)
    • Q(g);OGATE,XP(H)::QAR1(E),XQ(g)
    • Q(g);N_SPINP(b)::S(B)
    • R(a);N_GUARD::S(B)
    • R(a);N_GUARD::S(B),XR(a)
    • R(c);N_GUARD,XP(G)::QAR1(E)
    • R(c);N_GUARD::QAR1(E),XR(c)
    • R(c);CHECK,OGATE::P(G),XR(c)
    • R(c);N_GUARD::QAR1(E)
  • Tries
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • R(c);CHECK,OGATE,XS(C)::P(G),XR(c)
        • Q(g);OGATE,XP(H)::QAR1(E),XQ(g)
        • R(c);XP(G)::QAR1(E)
        • Q(g);N_SPINP(b),P_PINS(B)::QAR1(E)
        • R(a);P_PINS(B)::QAR1(E)
      • Refutation
        • S(i);
    • Try
      • B(J);XQ(g)
      • Threat
        • S(B)
      • Vars
        • R(c);CHECK,OGATE::P(G),XR(c)
      • Refutation
        • S(i);
  • Actual
    • S(C);XP(b)
    • Threat
      • B(A)+S(C),DCHECK
    • Vars
      • R(c);CHECK,OGATE::P(G),XR(c)
      • Q(g);OGATE,XP(H)::QAR1(E),XQ(g)
      • R(a);N_GUARD,P_SPINR(a),XS(C)::S(B)
      • R(c);N_GUARD,P_SPINR(c),XS(C)::QAR1(E)
      • Q(g);P_PINS(B)::S(C)
      • R(c);N_GUARD::QAR1(E),XR(c)
      • Q(g);::B(A)+S(C),DCHECK,XQ(g)
      • Q(g);P_PINS(C)::S(B)
      • S(i);SBLOCK::R(I)
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