MESON Chess Problem Database

Problem Display
PID: 206395 (8/8/3p4/8/1KBk2N1/8/6n1/2Q5 w - - 0 1)

Pikler, Robert

Nepszava, 1925

8/8/3p4/8/1KBk2N1/8/6n1/2Q5

#2

4 + 3

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Se1
      • 2.Qe3#
      • 2.Qf4#
    • 1...Se3
      • 2.Qxe3#
    • 1...Sf4
      • 2.Qe3#
      • 2.Qxf4#
    • 1...Sh4
      • 2.Qe3#
      • 2.Qf4#
  • Tries
    • 1.Qa3?
      • threat
        • 2.Qd3#
      • 1...Se1
        • 2.Qe3#
      • 1...Sf4
        • 2.Qe3#
      • 1...Ke4!
    • 1.Qg5?
      • threat
        • 2.Qd5#
      • 1...Se3
        • 2.Qxe3#
        • 2.Qf4#
      • 1...Sf4
        • 2.Qxf4#
      • 1...d5
        • 2.Qxd5#
        • 2.Qe5#
      • 1...Ke4!
    • 1.Qe1?
      • 1...Se3
        • 2.Qxe3#
      • 1...Sf4
        • 2.Qe3#
      • 1...Sh4
        • 2.Qe3#
      • 1...d5
        • 2.Qe5#
      • 1...Sxe1!
    • 1.Qf1?
      • threat
        • 2.Qd3#
      • 1...Se1
        • 2.Qf4#
      • 1...Sf4
        • 2.Qxf4#
      • 1...Ke4!
    • 1.Qg1+?
      • 1...Se3
        • 2.Qxe3#
      • 1...Ke4!
  • Keys
    • 1.Bd5!
      • threat
        • 2.Qd2#
        • 2.Qd1#
        • 2.Qc4#
      • 1...Kd3
        • 2.Qd1#
      • 1...Kxd5
        • 2.Qc4#
      • 1...Se3
        • 2.Qd2#
      • 1...Se1
        • 2.Qc4#
      • 1...Sf4
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • S(a);N_GUARD::QAB1(A),XS(a)
  • Tries
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • S(a);N_GUARD::QAB1(A)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • S(a);N_GUARD::QAR2(A),XS(a)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);
      • Vars
        • S(a);N_GUARD::QAB1(A),XS(a)
        • S(a);N_GUARD::QAB1(A)
        • P(c);N_GUARD::QAB1(A)
      • Refutation
        • S(a);XQ(A)
    • Try
      • Q(A);
      • Threat
        • QAR1(A)
      • Vars
        • S(a);N_GUARD::QAR2(A)
        • S(a);N_GUARD::QAR2(A),XS(a)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAB1(A),XS(a)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • B(C);
    • Threat
      • DUALS(3)
    • Vars
      • K(b);P-FLIGHT::QAR2(A)
      • K(b);P-FLIGHT,XB(C)::QAB1(A)
      • S(a);::QAR2(A)
      • S(a);::QAR1(A)
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