MESON Chess Problem Database

Problem Display
PID: 187870 (4b3/1N2pR2/1K2k3/4N3/2P5/6QP/8/8 w - - 0 1)

Keidanski, Theodore Hermann

Rivista Scacchistica Italiana, 1910

4b3/1N2pR2/1K2k3/4N3/2P5/6QP/8/8

#2

7 + 3

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Qf2?
      • threat
        • 2.Qf5#
      • 1...Kxe5
        • 2.Rxe7#
        • 2.Qe3#
      • 1...Bxf7!
    • 1.Qa3?
      • threat
        • 2.Qxe7#
      • 1...Kxe5
        • 2.Qe3#
      • 1...Bxf7!
    • 1.Qd3?
      • threat
        • 2.Qf5#
        • 2.Qd5#
      • 1...Kxe5
        • 2.Qe3#
        • 2.Qd5#
      • 1...Bc6
        • 2.Qf5#
      • 1...Bxf7!
    • 1.Qf3?
      • threat
        • 2.Qd5#
        • 2.Qf5#
      • 1...Kxe5
        • 2.Qd5#
        • 2.Qe3#
      • 1...Bc6
        • 2.Qf5#
      • 1...Bxf7!
  • Keys
    • 1.Sd7!
      • 1...Kxd7
        • 2.Qg4#
      • 1...Kxf7
        • 2.Sd8#
      • 1...Bxd7
        • 2.Sd8#
      • 1...Bxf7
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAB1(A)
      • Refutation
        • B(c);XR(G)
    • Try
      • Q(A);
      • Threat
        • QAR1(A),XP(b)
      • Vars
        • K(a);OGATEB,P-FLIGHT,XS(D)::QAR2(A)
      • Refutation
        • B(c);XR(G)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • B(c);::QAB1(A)
      • Refutation
        • B(c);XR(G)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • B(c);::QAB1(A)
      • Refutation
        • B(c);XR(G)
  • Actual
    • S(D);
    • Vars
      • K(a);P_SPINP(b),S_FLIGHT,XS(D)::QAB(A)
      • K(a);S_FLIGHT,XR(G)::S(F)
      • B(c);SBLOCK,XS(D)::S(F)
      • B(c);SBLOCK,XR(G)::QAB(A)
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