MESON Chess Problem Database

Problem Display
PID: 110498 (5nR1/4k3/6n1/5Q2/8/K6B/8/8 w - - 0 1)

Valladao Monteiro da Silveira, Joaquim

La Strategie, 1933

5nR1/4k3/6n1/5Q2/8/K6B/8/8

#2

4 + 3

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Kd8
      • 2.Qd7#
    • 1...Ke8
      • 2.Qd7#
    • 1...Sf4
      • 2.Qxf8#
    • 1...Sh4
      • 2.Qxf8#
    • 1...Se5
      • 2.Qxf8#
    • 1...Sh8
      • 2.Qxf8#
    • 1...Se6
      • 2.Qxe6#
    • 1...Sd7
      • 2.Qe6#
    • 1...Sh7
      • 2.Qe6#
  • Tries
    • 1.Ka2?
      • 1...Kd8
        • 2.Qd7#
      • 1...Ke8
        • 2.Qd7#
      • 1...Sf4
        • 2.Qxf8#
      • 1...Sh4
        • 2.Qxf8#
      • 1...Se5
        • 2.Qxf8#
      • 1...Sh8
        • 2.Qxf8#
      • 1...Se6
        • 2.Qxe6#
      • 1...Sd7
        • 2.Qe6#
      • 1...Sh7
        • 2.Qe6#
      • 1...Kd6!
    • 1.Kb2?
      • 1...Kd8
        • 2.Qd7#
      • 1...Ke8
        • 2.Qd7#
      • 1...Sf4
        • 2.Qxf8#
      • 1...Sh4
        • 2.Qxf8#
      • 1...Se5
        • 2.Qxf8#
      • 1...Sh8
        • 2.Qxf8#
      • 1...Se6
        • 2.Qxe6#
      • 1...Sd7
        • 2.Qe6#
      • 1...Sh7
        • 2.Qe6#
      • 1...Kd6!
    • 1.Kb3?
      • 1...Kd8
        • 2.Qd7#
      • 1...Ke8
        • 2.Qd7#
      • 1...Sf4
        • 2.Qxf8#
      • 1...Sh4
        • 2.Qxf8#
      • 1...Se5
        • 2.Qxf8#
      • 1...Sh8
        • 2.Qxf8#
      • 1...Se6
        • 2.Qxe6#
      • 1...Sd7
        • 2.Qe6#
      • 1...Sh7
        • 2.Qe6#
      • 1...Kd6!
    • 1.Ka4?
      • 1...Kd8
        • 2.Qd7#
      • 1...Ke8
        • 2.Qd7#
      • 1...Sf4
        • 2.Qxf8#
      • 1...Sh4
        • 2.Qxf8#
      • 1...Se5
        • 2.Qxf8#
      • 1...Sh8
        • 2.Qxf8#
      • 1...Se6
        • 2.Qxe6#
      • 1...Sd7
        • 2.Qe6#
      • 1...Sh7
        • 2.Qe6#
      • 1...Kd6!
    • 1.Bg4?
      • 1...Kd8
        • 2.Qd7#
      • 1...Ke8
        • 2.Qd7#
      • 1...Sf4
        • 2.Qxf8#
      • 1...Sh4
        • 2.Qxf8#
      • 1...Se5
        • 2.Qxf8#
      • 1...Sh8
        • 2.Qxf8#
      • 1...Se6
        • 2.Qxe6#
      • 1...Sd7
        • 2.Qe6#
      • 1...Sh7
        • 2.Qe6#
      • 1...Kd6!
    • 1.Rg7+?
      • 1...Kd8
        • 2.Qc8#
      • 1...Ke8
        • 2.Qc8#
      • 1...Kd6!
    • 1.Qe6+?
      • 1...Kd8
        • 2.Qd7#
      • 1...Sxe6!
  • Keys
    • 1.Kb4!
      • 1...Kd6
        • 2.Qc5#
      • 1...Kd8
        • 2.Qd7#
      • 1...Ke8
        • 2.Qd7#
      • 1...Sf4
        • 2.Qxf8#
      • 1...Sh4
        • 2.Qxf8#
      • 1...Se5
        • 2.Qxf8#
      • 1...Sh8
        • 2.Qxf8#
      • 1...Se6
        • 2.Qxe6#
      • 1...Sd7
        • 2.Qe6#
      • 1...Sh7
        • 2.Qe6#

FEATURES

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