MESON Chess Problem Database

Problem Display
PID: 16812 (2B1Q3/1P3N2/p2P4/K1Pk4/4R3/5n2/2P2n2/6B1 w - - 0 1)

Visserman, Eeltje

1st Prize, Nederlandse Bond van Probleemvrienden 040. TT, 1943

2B1Q3/1P3N2/p2P4/K1Pk4/4R3/5n2/2P2n2/6B1

#2

10 + 4

3098 FIDE Album (1914-1944) (I) 1971

SOLUTION

  • SOUND
  • Sets
    • 1...Sd1
      • 2.c4#
    • 1...Sh1
      • 2.c4#
    • 1...Sd3
      • 2.c4#
    • 1...Sh3
      • 2.c4#
    • 1...Sxe4
      • 2.Be6#
    • 1...Sg4
      • 2.c4#
  • Tries
    • 1.Kb6?
      • threat
        • 2.Qc6#
        • 2.Qe6#
        • 2.c4#
      • 1...Sxe4
        • 2.Be6#
        • 2.Qe6#
      • 1...Se5
        • 2.Qxe5#
      • 1...Sd2
        • 2.Qc6#
        • 2.Qe5#
        • 2.Qe6#
      • 1...Sg5
        • 2.Qc6#
        • 2.Qe5#
        • 2.c4#
      • 1...Sd4!
    • 1.Sd8?
      • threat
        • 2.Qc6#
      • 1...Kxc5
        • 2.Qc6#
      • 1...Sxe4
        • 2.Qe6#
      • 1...Se5
        • 2.Qxe5#
      • 1...Sd4!
    • 1.Be6+?
      • 1...Kxc5
        • 2.Rc4#
        • 2.Qc8#
      • 1...Kxe4!
    • 1.Qe5+?
      • 1...Kc6
        • 2.Sd8#
        • 2.b8S#
      • 1...Sxe5!
    • 1.Qe6+?
      • 1...Kxc5
        • 2.Rc4#
        • 2.Qc4#
      • 1...Kc6!
    • 1.b8S?
      • threat
        • 2.Qc6#
      • 1...Kxc5
        • 2.Qc6#
      • 1...Sxe4
        • 2.Be6#
        • 2.Qe6#
      • 1...Se5
        • 2.Qxe5#
      • 1...Sd4!
  • Keys
    • 1.Qa4!
      • 1...Kxc5
        • 2.Qc4#
      • 1...Sxe4
        • 2.c4#
      • 1...Sxg1
        • 2.Re5#
      • 1...Sd4
        • 2.Re5#
      • 1...Sd1
        • 2.Be6#
      • 1...Sh1
        • 2.Be6#
      • 1...Sd3
        • 2.Be6#
      • 1...Sh3
        • 2.Be6#
      • 1...Sg4
        • 2.Be6#
      • 1...Se1
        • 2.Re5#
      • 1...Sd2
        • 2.Re5#
      • 1...Sh2
        • 2.Re5#
      • 1...Sh4
        • 2.Re5#
      • 1...Se5
        • 2.Rxe5#
      • 1...Sg5
        • 2.Re5#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 6
    • ADDED MATES = 9
    • REMOVED MATES = 0
  • Sets
    • S(a);::P(B)
    • S(a);SBLOCK,XR(C)::B(I)
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Threat
        • DUALS(3)
      • Vars
        • S(b);N_GUARD::QAR1(J),XS(b)
      • Refutation
        • S(b);
    • Try
      • S(H);
      • Threat
        • QAB1(J)
      • Vars
        • K(c);P-FLIGHT,P_SPINS(a),XP(E)::QAR1(J)
        • S(a);XR(C)::QAB1(J)
        • S(b);N_GUARD::QAR1(J),XS(b)
      • Refutation
        • S(b);
    • Try
      • B(I);CHECK
      • Refutation
        • K(c);S_FLIGHT,XR(C)
    • Try
      • Q(J);CHECK
      • Refutation
        • S(b);XQ(J)
    • Try
      • Q(J);CHECK
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • P(G);
      • Threat
        • QAB1(J)
      • Vars
        • K(c);P-FLIGHT,P_SPINS(a),XP(E)::QAR1(J)
        • S(b);N_GUARD::QAR1(J),XS(b)
      • Refutation
        • S(b);
  • Actual
    • Q(J);
    • Vars
      • K(c);P-FLIGHT,P_SPINS(a),XP(E)::QAR1(J)
      • S(a);SBLOCK,XR(C)::P(B)
      • S(b);N_GUARD,XB(A)::R1(C)
      • S(b);N_GUARD::R1(C)
      • S(a);::B(I)
      • S(b);N_GUARD::R1(C),XS(b)
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