MESON Chess Problem Database

Problem Display
PID: 187916 (1Q2n3/8/pp4b1/1P1N1pN1/R1Bk1p1n/BP6/1R2P3/2b2K2 w - - 0 1)

van Dijk, Johannes

De Maasbode, 1910

1Q2n3/8/pp4b1/1P1N1pN1/R1Bk1p1n/BP6/1R2P3/2b2K2

#2

11 + 9

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Bxb2
      • 2.Qxf4#
    • 1...Bd2
      • 2.Rxd2#
    • 1...Sd6
      • 2.Qh8#
    • 1...Sc7
      • 2.Qh8#
  • Tries
    • 1.Sf3+?
      • 1...Ke4
        • 2.Qe5#
      • 1...Sxf3!
    • 1.Bc5+?
      • 1...Kxc5
        • 2.Se6#
        • 2.Qxb6#
      • 1...bxc5!
    • 1.Qd6?
      • threat
        • 2.Bd3#
      • 1...axb5
        • 2.Bxb5#
      • 1...Bd2
        • 2.Rxd2#
      • 1...Sxd6!
    • 1.Qxe8?
      • threat
        • 2.Qh8#
      • 1...Sf3
        • 2.Sxf3#
      • 1...Bxe8!
    • 1.e3+?
      • 1...fxe3
        • 2.Qf4#
      • 1...Bxe3!
  • Keys
    • 1.e4!
      • threat
        • 2.Be2#
      • 1...fxe4
        • 2.Se6#
      • 1...axb5
        • 2.Bxb5#
      • 1...fxe4 ep
        • 2.Qf4#
      • 1...Sd6
        • 2.Qh8#
      • 1...Sc7
        • 2.Qh8#
      • 1...Bd2
        • 2.Rxd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD,XR(B)::QAR2(K),XP(c)
    • B(a);N_GUARD::R(B),XB(a)
    • S(i);OGATE::QAB(K)
  • Tries
    • Try
      • S(J);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR1(K)
      • Refutation
        • S(d);XS(J)
    • Try
      • B(D);CHECK
      • Refutation
        • P(g);XB(D)
    • Try
      • Q(K);
      • Threat
        • R(F)+B(G)
      • Vars
        • P(f);OGATE,XP(H)::R(F)+B(G),XP(f)
        • B(a);N_GUARD::R(B),XB(a)
      • Refutation
        • S(i);XQ(K)
    • Try
      • Q(K);XS(i)
      • Threat
        • QAB(K)
      • Vars
        • S(d);N_GUARD::S(J),XS(d)
      • Refutation
        • B(h);XQ(K)
    • Try
      • P(C);CHECK
      • Vars
        • P(c);XP(C)::QAR2(K)
      • Refutation
        • B(a);XP(C)
  • Actual
    • P(C);
    • Threat
      • R(F)+B(G)
    • Vars
      • P(e);SBLOCK,XP(C)::S(J)
      • P(f);OGATE,XP(H)::R(F)+B(G),XP(f)
      • P(c);EP,OGATEB,XP(C)::QAR2(K)
      • S(i);OGATE::QAB(K)
      • B(a);N_GUARD::R(B),XB(a)
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