MESON Chess Problem Database

Problem Display
PID: 183382 (n7/nK1kB1Q1/5P2/1p2rp1B/3r1N2/8/8/8 w - - 0 1)

Weenink, Henri Gerard Maria

Eigen Haard, 1922

(First published on Sat Sep 23 1922)

n7/nK1kB1Q1/5P2/1p2rp1B/3r1N2/8/8/8

#2

6 + 7

16055 HGM Weenink (Euwe/Niemeijer/Rueb/Trotsenburg) 1932

SOLUTION

  • SOUND
  • Sets
    • 1...Rxe7
      • 2.Qxe7#
  • Tries
    • 1.Sg6?
      • threat
        • 2.Sf8#
      • 1...Ke8
        • 2.Sxe5#
        • 2.Sf8#
      • 1...Rxe7
        • 2.Qxe7#
      • 1...Ke6!
    • 1.Ba3+?
      • 1...Re7
        • 2.Qxe7#
      • 1...Kd8!
    • 1.Bb4+?
      • 1...Re7
        • 2.Qxe7#
      • 1...Kd8!
    • 1.Bc5+?
      • 1...Re7
        • 2.Qxe7#
      • 1...Kd8!
    • 1.Bf8+?
      • 1...Re7
        • 2.Qxe7#
      • 1...Kd8!
    • 1.Qf8?
      • threat
        • 2.Be8#
        • 2.Qd8#
        • 2.Qe8#
      • 1...Rxe7
        • 2.Qxe7#
      • 1...Sc6
        • 2.Be8#
        • 2.Qc8#
        • 2.Qe8#
      • 1...Sc7
        • 2.Qd8#
      • 1...Rxf4!
    • 1.Qg8?
      • threat
        • 2.Be8#
        • 2.Qd8#
        • 2.Qe8#
      • 1...Rxf4
        • 2.Be8#
      • 1...Sc6
        • 2.Be8#
        • 2.Qc8#
        • 2.Qe8#
      • 1...Sc7
        • 2.Qd8#
      • 1...Rxe7!
  • Keys
    • 1.f7!
      • threat
        • 2.f8S#
      • 1...Kxe7
        • 2.f8Q#
      • 1...Rxe7
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(c);OGATE,P_SPINR(c),XB(E)::QAR1(F),XR(c)
  • Tries
    • Try
      • S(A);
      • Threat
        • S(A)
      • Vars
        • R(c);OGATE,P_SPINR(c),XB(E)::QAR1(F),XR(c)
      • Refutation
        • K(f);S_FLIGHT
    • Try
      • B(E);CHECK
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::QAR1(F),XR(c)
      • Refutation
        • K(f);P-FLIGHT
    • Try
      • B(E);CHECK
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::QAR1(F),XR(c)
      • Refutation
        • K(f);P-FLIGHT
    • Try
      • B(E);CHECK
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::QAR1(F),XR(c)
      • Refutation
        • K(f);P-FLIGHT
    • Try
      • B(E);CHECK
      • Vars
        • R(c);N_GUARD,P_SPINR(c)::QAR1(F),XR(c)
      • Refutation
        • K(f);P-FLIGHT
    • Try
      • Q(F);
      • Threat
        • DUALS(3)
      • Vars
        • R(c);OGATE,XB(E)::QAR1(F),XR(c)
        • S(g);::QAR1(F)
      • Refutation
        • R(a);XS(A)
    • Try
      • Q(F);
      • Threat
        • DUALS(3)
      • Vars
        • R(a);XS(A)::B(B)
        • S(g);::QAR1(F)
      • Refutation
        • R(c);XB(E)
  • Actual
    • P(C);
    • Threat
      • P=S
    • Vars
      • K(f);P-FLIGHT,XB(E)::P=Q
      • R(c);OGATE,SBLOCK,XB(E)::QAR(F),XR(a)
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