MESON Chess Problem Database

Problem Display
PID: 217038 (8/B1Q5/2pR4/2bqknN1/3R1p1n/4pp1K/bN6/8 w - - 0 1)

Tereshenko, Nikolai Semenovich

Falkirk Herald, 1930

(First published on Wed May 7 1930)

8/B1Q5/2pR4/2bqknN1/3R1p1n/4pp1K/bN6/8

#2

7 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qb3
      • 2.Re4#
    • 1...Qe4
      • 2.Rxe4#
    • 1...Qf7
      • 2.Sd3#
      • 2.Re4#
    • 1...Qg8
      • 2.Sd3#
      • 2.Re4#
    • 1...Ba3
      • 2.Sd3#
      • 2.Re6#
    • 1...Bb4
      • 2.Sd3#
      • 2.Re6#
    • 1...Bxd4
      • 2.Sd3#
      • 2.Re6#
  • Tries
    • 1.Sf7+?
      • 1...Qxf7
        • 2.Sd3#
      • 1...Kxd4!
    • 1.Qe7+?
      • 1...Kxd4
        • 2.Qf6#
      • 1...Qe6
        • 2.Sd3#
        • 2.Sf7#
        • 2.Re4#
      • 1...Sxe7!
    • 1.Qg7+?
      • 1...Kxd6
        • 2.Bb8#
      • 1...Sxg7!
  • Keys
    • 1.Qf7!
      • threat
        • 2.Qf6#
      • 1...Kxd4
        • 2.Qf6#
      • 1...Kxd6
        • 2.Bb8#
      • 1...Qxf7
        • 2.Sd3#
      • 1...Qxd6
        • 2.Re4#
      • 1...Bxd6
        • 2.Sd3#
      • 1...Sxd6
        • 2.Qxf4#
      • 1...Qe6
        • 2.Sd3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 2
  • Sets
    • Q(g);N_GUARD::R1(C)
    • Q(g);N_GUARD::R1(C),XQ(g)
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • Q(g);XS(D)::S(A)
      • Refutation
        • K(h);P_SPINB(f),P_SPINQ(g),S_FLIGHT,XR(C)
    • Try
      • Q(G);CHECK
      • Vars
        • K(h);P_SPINB(f),P_SPINQ(g),S_FLIGHT,XR(C)::QAB(G)
      • Refutation
        • S(i);XQ(G)
    • Try
      • Q(G);CHECK
      • Vars
        • K(h);P_SPINQ(g),S_FLIGHT,XR(E)::B(F)
      • Refutation
        • S(i);XQ(G)
  • Actual
    • Q(G);
    • Threat
      • QAB1(G)
    • Vars
      • K(h);P_SPINB(f),P_SPINQ(g),S_FLIGHT,XR(C)::QAB(G)
      • K(h);OGATEB,P_SPINQ(g),S_FLIGHT,XR(E)::B(F)
      • Q(g);XQ(G)::S(A)
      • Q(g);N_GUARD,SBLOCK,XR(E)::R1(C)
      • B(f);SBLOCK,XR(E)::S(A)
      • S(i);OGATE,SBLOCK,XR(E)::QAB1(G),XP(d)
      • Q(g);::S(A)
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