MESON Chess Problem Database

Problem Display
PID: 206399 (8/1pp3p1/b5pp/p2Q4/r3PkNP/r4B2/7K/bn3R2 w - - 0 1)

van Dijk, Johannes

Noord-Hollandsch Dagblad, 1925

8/1pp3p1/b5pp/p2Q4/r3PkNP/r4B2/7K/bn3R2

#2

7 + 12

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Ra2+
      • 2.Be2#
    • 1...Rc3
      • 2.Qf7#
      • 2.Qe5#
    • 1...Rd4
      • 2.Qf7#
      • 2.Qe5#
    • 1...Rxe4
      • 2.Qxe4#
    • 1...Bc3
      • 2.Be2#
    • 1...Be5
      • 2.Qxe5#
    • 1...Bd3
      • 2.Be2#
    • 1...Sc3
      • 2.Be2#
      • 2.Qf7#
      • 2.Qd2#
      • 2.Qe5#
    • 1...g5
      • 2.Qf5#
    • 1...h5
      • 2.Qg5#
  • Tries
    • 1.Qd2+?
      • 1...Re3
        • 2.Qxe3#
      • 1...Sxd2!
    • 1.Qd6+?
      • 1...Be5
        • 2.Qxe5#
      • 1...cxd6!
  • Keys
    • 1.e5!
      • threat
        • 2.Qf7#
      • 1...Ra2+
        • 2.Be2#
      • 1...Kf5
        • 2.Qf7#
      • 1...Rxf3
        • 2.Qxf3#
      • 1...Bxe5
        • 2.Qxe5#
      • 1...Bd3
        • 2.Be2#
      • 1...Bc4
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 4
  • Sets
    • R(c);CHECK,N_GUARD::R(A)+B(C)
    • R(d);OGATE,XP(D)::QAR1(G),XR(d)
    • B(a);S_CUTR(c)::R(A)+B(C)
    • B(a);N_GUARD::QAB1(G),XB(a)
    • B(g);S_CUTR(c)::R(A)+B(C)
    • P(h);N_GUARD::QAR1(G)
    • P(i);N_GUARD::QAB1(G)
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::QAB1(G),XR(c)
      • Refutation
        • S(b);XQ(G)
    • Try
      • Q(G);CHECK
      • Vars
        • B(a);N_GUARD,P_SPINB(a)::QAB1(G),XB(a)
      • Refutation
        • P(k);XQ(G)
  • Actual
    • P(D);
    • Threat
      • QAR(G)
    • Vars
      • R(c);CHECK,N_GUARD::R(A)+B(C)
      • K(e);P-FLIGHT::QAR2(G)
      • R(c);OGATE,P_SPINR(c),XB(C)::QAR1(G),XR(c)
      • B(a);OGATE,XP(D)::QAB1(G),XB(a)
      • B(g);S_CUTR(c)::R(A)+B(C)
      • B(g);S_CUTR(d)::QAR1(G)
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