MESON Chess Problem Database

Problem Display
PID: 260858 (n7/6K1/4p3/3k2p1/PBR5/1p6/7Q/6n1 w - - 0 1)

de Barbieri, Vittorio

Shakhmatny Zhurnal, 1902

n7/6K1/4p3/3k2p1/PBR5/1p6/7Q/6n1

#2

5 + 6

SOLUTION

  • SOUND
  • Tries
    • 1.Qf4?
      • threat
        • 2.Rc5#
        • 2.Qd4#
        • 2.Qe4#
      • 1...e5
        • 2.Qf7#
      • 1...Se2
        • 2.Rc5#
        • 2.Qe4#
      • 1...Sf3
        • 2.Rc5#
        • 2.Qe4#
      • 1...gxf4!
    • 1.Qe5+?
      • 1...Kxc4
        • 2.Qe4#
      • 1...Kxe5!
    • 1.Qc7?
      • threat
        • 2.Qc5#
      • 1...e5
        • 2.Qc6#
        • 2.Qf7#
      • 1...Sxc7!
    • 1.Qh1+?
      • 1...Kxc4
        • 2.Qe4#
      • 1...Ke5
        • 2.Qe4#
      • 1...Sf3!
    • 1.Qd2+?
      • 1...Ke5
        • 2.Qxg5#
      • 1...Kxc4!
    • 1.Qf2?
      • threat
        • 2.Qd4#
        • 2.Qc5#
      • 1...Ke5
        • 2.Qc5#
      • 1...Se2
        • 2.Qc5#
      • 1...Sf3
        • 2.Qc5#
      • 1...e5
        • 2.Qf7#
      • 1...Kxc4!
    • 1.Qg2+?
      • 1...Kxc4
        • 2.Qe4#
      • 1...Ke5
        • 2.Qe4#
        • 2.Qxg5#
      • 1...Sf3!
  • Keys
    • 1.Qh7!
      • threat
        • 2.Qe4#
      • 1...Kxc4
        • 2.Qe4#
      • 1...Ke5
        • 2.Qe4#
      • 1...e5
        • 2.Qg8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Vars
        • P(e);OGATEB,SBLOCK::QAB(A)
      • Refutation
        • P(d);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);S_FLIGHT,XR(D)::QAR2(A)
      • Refutation
        • K(c);P-FLIGHT,XQ(A)
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Refutation
        • S(f);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);S_FLIGHT,XR(D)::QAR2(A)
        • K(c);P-FLIGHT::QAR1(A)
      • Refutation
        • S(a);P_SPINS(a)
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);N_GUARD,P-FLIGHT,S_CUTP(e)::QAR2(A),XP(d)
      • Refutation
        • K(c);S_FLIGHT,XR(D)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • K(c);P-FLIGHT::QAR2(A)
        • S(a);::QAR1(A)
        • P(e);OGATEB,SBLOCK::QAB(A)
      • Refutation
        • K(c);S_FLIGHT,XR(D)
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);S_FLIGHT,XR(D)::QAR2(A)
      • Refutation
        • S(a);P_SPINS(a)
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • K(c);S_FLIGHT,XR(D)::QAR2(A)
      • K(c);P-FLIGHT::QAR1(A)
      • P(e);OGATEB,SBLOCK::QAB(A)
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