MESON Chess Problem Database

Problem Display
PID: 237812 (8/6N1/3n4/2brB2p/3pk3/2p3PQ/p4PN1/rb1B2K1 w - - 0 1)

Pituk, Alexander

Arbejder-Skak, 1948

8/6N1/3n4/2brB2p/3pk3/2p3PQ/p4PN1/rb1B2K1

#2

8 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Kxe5
      • 2.Qe6#
    • 1...Sc4
      • 2.Qf5#
    • 1...Sb5
      • 2.Qf5#
    • 1...Sf5
      • 2.Qxf5#
    • 1...Sb7
      • 2.Qf5#
    • 1...Sf7
      • 2.Qf5#
    • 1...Sc8
      • 2.Qf5#
    • 1...Se8
      • 2.Qf5#
  • Tries
    • 1.Qg4+?
      • 1...Kd3
        • 2.Qe2#
      • 1...Kxe5
        • 2.Qe6#
        • 2.Qf4#
      • 1...hxg4!
    • 1.Qh4+?
      • 1...Kxe5
        • 2.Qe7#
        • 2.Qf4#
      • 1...Kd3!
    • 1.f3+?
      • 1...Kxe5
        • 2.Qe6#
      • 1...Kd3!
  • Keys
    • 1.Qxh5!
      • threat
        • 2.Qe2#
      • 1...Kd3
        • 2.Qe2#
      • 1...Rxe5
        • 2.Qf3#
      • 1...Sf5
        • 2.Qxf5#
      • 1...Bd3
        • 2.f3#
      • 1...Sc4
        • 2.Qf5#
      • 1...d3
        • 2.Bf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 6
  • Sets
    • K(f);OGATEB,P-FLIGHT,XB(G)::QAR1(F)
    • S(j);N_GUARD::QAB1(F)
    • S(j);N_GUARD::QAB1(F),XS(j)
  • Tries
    • Try
      • Q(F);CHECK
      • Vars
        • K(f);S_FLIGHT::QAB1(F)
      • Refutation
        • P(i);XQ(F)
    • Try
      • Q(F);CHECK
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • P(C);CHECK
      • Vars
        • K(f);P-FLIGHT,XB(G)::QAR1(F)
      • Refutation
        • K(f);S_FLIGHT
  • Actual
    • Q(F);XP(i)
    • Threat
      • QAR2(F)
    • Vars
      • K(f);S_FLIGHT::QAB1(F)
      • R(h);SBLOCK,XB(G)::QAB1(F)
      • S(j);N_GUARD::QAB1(F),XS(j)
      • B(b);P_PINB(A),SBLOCK::P(C)
      • S(j);N_GUARD::QAB1(F)
      • P(e);P_PINP(C),SBLOCK::B(A)
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