MESON Chess Problem Database

Problem Display
PID: 259644 (8/5K2/nB1N1NP1/4p2B/1pRP4/3kp1R1/3b4/n2Qq3 w - - 0 1)

de Barbieri, Vittorio

L'Italia Scacchistica, 1941

8/5K2/nB1N1NP1/4p2B/1pRP4/3kp1R1/3b4/n2Qq3

#2

10 + 8

15601 Albrecht-Leiss-Degener Collection 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Qxg3
      • 2.Be2#
      • 2.Qe2#
    • 1...Qf1
      • 2.Qxf1#
    • 1...Qg1
      • 2.Be2#
      • 2.Qe2#
    • 1...Qh1
      • 2.Be2#
      • 2.Qe2#
    • 1...Qe2
      • 2.Bxe2#
      • 2.Qxe2#
    • 1...Sc2
      • 2.Qxc2#
    • 1...Sb3
      • 2.Qc2#
  • Tries
    • 1.Sg4?
      • threat
        • 2.Sxe5#
      • 1...Qf2+
        • 2.Sxf2#
      • 1...Qf1+
        • 2.Qxf1#
      • 1...exd4
        • 2.Se5#
      • 1...e4
        • 2.Se5#
      • 1...Qxg3!
    • 1.Sd7?
      • threat
        • 2.Sxe5#
      • 1...Qf1+
        • 2.Qxf1#
      • 1...Qxg3
        • 2.Be2#
        • 2.Qe2#
      • 1...exd4
        • 2.Se5#
      • 1...e4
        • 2.Se5#
      • 1...Qf2+!
    • 1.Rxe3+?
      • 1...Kxe3
        • 2.Qf3#
      • 1...Qxe3!
    • 1.Qb1+?
      • 1...Sc2
        • 2.Qxc2#
      • 1...Qxb1!
    • 1.Qxe1?
      • threat
        • 2.Be2#
        • 2.Qf1#
        • 2.Qe2#
      • 1...Bc3
        • 2.Qe2#
      • 1...Bc1
        • 2.Be2#
        • 2.Qe2#
      • 1...Bxe1!
  • Keys
    • 1.Sfe4!
      • 1...Qf2+
        • 2.Sxf2#
      • 1...Qf1+
        • 2.Qxf1#
      • 1...Qxg3
        • 2.Be2#
        • 2.Qe2#
      • 1...Qxd1
        • 2.Sf2#
      • 1...exd4
        • 2.Rxd4#
      • 1...Qg1
        • 2.Be2#
        • 2.Qe2#
        • 2.Qxd2#
      • 1...Qh1
        • 2.Sf2#
        • 2.Be2#
        • 2.Qe2#
        • 2.Qxd2#
      • 1...Qe2
        • 2.Bxe2#
        • 2.Qxe2#
      • 1...Sc2
        • 2.Qxc2#
      • 1...Sb3
        • 2.Qc2#
      • 1...Sc5
        • 2.Sxc5#
      • 1...Sc7
        • 2.Sc5#
      • 1...Sb8
        • 2.Sc5#
      • 1...b3
        • 2.Rc3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • Q(b);OGATE,P_PINS(H)::QAB(A),XQ(b)
    • S(a);N_GUARD::QAB1(A),XS(a)
    • S(a);N_GUARD::QAB1(A)
  • Tries
    • Try
      • S(H);
      • Threat
        • S(H),XP(g)
      • Vars
        • Q(b);CHECK,N_GUARD::S(H),XQ(b)
        • Q(b);CHECK,OGATE::QAB(A),XQ(b)
        • P(g);XP(D)::S(H)
        • P(g);::S(H)
      • Refutation
        • Q(b);N_SPINP(e),XR(B)
    • Try
      • S(H);
      • Threat
        • S(H),XP(g)
      • Vars
        • Q(b);CHECK,OGATE::QAB(A),XQ(b)
        • P(g);XP(D)::S(H)
        • P(g);::S(H)
      • Refutation
        • Q(b);CHECK
    • Try
      • R(B);CHECK,XP(e)
      • Vars
        • K(d);N_SPINB(c),P-FLIGHT,S_CUTB(c),S_CUTQ(b),XR(B)::QAR1(A)
      • Refutation
        • Q(b);XR(B)
    • Try
      • Q(A);CHECK,N_PINB(c)
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAB1(A),XS(a)
      • Refutation
        • Q(b);XQ(A)
    • Try
      • Q(A);N_PINB(c),XQ(b)
      • Threat
        • DUALS(3)
      • Vars
        • B(c);::QAB1(A)
      • Refutation
        • B(c);XQ(A)
  • Actual
    • S(H);
    • Vars
      • Q(b);CHECK,N_GUARD::S(H),XQ(b)
      • Q(b);CHECK,OGATE::QAB(A),XQ(b)
      • Q(b);N_GUARD,N_SPINB(c),XQ(A)::S(H)
      • P(g);OGATE,XP(D)::R1(C),XP(g)
      • S(a);N_GUARD::QAB1(A),XS(a)
      • S(a);N_GUARD::QAB1(A)
      • S(h);N_GUARD::S(H),XS(h)
      • S(h);N_GUARD::S(H)
      • P(f);N_GUARD::R1(C)
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