MESON Chess Problem Database

Problem Display
PID: 21681 (bQ2R3/K1pBrp2/nN1r4/R2nk3/3qN1P1/2B1PP2/8/b7 w - - 0 1)

Weenink, Henri Gerard Maria

3rd Prize, Good Companions (July), 1920

bQ2R3/K1pBrp2/nN1r4/R2nk3/3qN1P1/2B1PP2/8/b7

#2

11 + 10

3132 The Good Companion Two-Mover 1922
3391 Het Half Pin Thema 1924
16055 HGM Weenink (Euwe/Niemeijer/Rueb/Trotsenburg) 1932
3098 FIDE Album (1914-1944) (I) 1971
5454 Near Snap 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Rc6
      • 2.Rxd5#
    • 1...Sc5
      • 2.Sc4#
    • 1...cxb6
      • 2.Rxe7#
      • 2.Qxd6#
    • 1...c5
      • 2.Sc4#
      • 2.Qxd6#
    • 1...c6
      • 2.Rxe7#
      • 2.Qxd6#
  • Tries
    • 1.Bxa1?
      • threat
        • 2.Bxd4#
      • 1...Qxa1
        • 2.Sc4#
      • 1...Qb2
        • 2.Sc4#
        • 2.Bxb2#
      • 1...Qc3
        • 2.Sc4#
        • 2.Bxc3#
      • 1...c5
        • 2.Sc4#
        • 2.Qxd6#
      • 1...Rxd7!
    • 1.Rxd5+?
      • 1...Rxd5
        • 2.Rxe7#
      • 1...Bxd5!
    • 1.Qxc7?
      • threat
        • 2.Rxe7#
        • 2.Qxd6#
      • 1...Rxe8
        • 2.Qxd6#
      • 1...Re6
        • 2.Qxd6#
      • 1...Sc5
        • 2.Sc4#
        • 2.Qxd6#
      • 1...Sxc7!
  • Keys
    • 1.Bf5!
      • threat
        • 2.f4#
      • 1...cxb6+
        • 2.Rxe7#
      • 1...c5+
        • 2.Sd7#
      • 1...c6+
        • 2.Rxe7#
      • 1...Sc5
        • 2.Sc4#

This anticipates 137287(1931)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • R(f);N_GUARD,P_SPINP(g),S_CUTB(j)::R1(F),XS(c)
    • S(e);N_PINS(G),N_SPINS(c)::S(G)
  • Tries
    • Try
      • B(A);XB(a)
      • Threat
        • B(A),XQ(b)
      • Vars
        • Q(b);N_PINS(G),N_SPINQ(b),XB(A)::S(G)
      • Refutation
        • R(f);P_SPINP(g),XB(I)
    • Try
      • R(F);CHECK,XS(c)
      • Vars
        • R(f);P_SPINP(g),XR(F)::R(K),XR(h)
      • Refutation
        • B(j);XR(F)
    • Try
      • Q(J);N_PINR(h),P_PINR(f),XP(g)
      • Threat
        • DUALS(2)
      • Vars
        • R(h);XR(K)::QAB1(J),XR(f)
        • R(h);::QAB1(J),XR(f)
      • Refutation
        • S(e);N_SPINR(f),P_SPINR(h),XQ(J)
  • Actual
    • B(I);
    • Threat
      • P(C)
    • Vars
      • P(g);CHECK,N_SPINR(h),P_SPINR(f),XS(G)::R(K),XR(h)
      • P(g);CHECK,N_PINS(G),N_SPINR(h),N_SPINS(c),P_SPINR(f)::S(G)
      • P(g);CHECK,N_SPINR(h),P_SPINR(f)::R(K),XR(h)
      • S(e);N_PINS(G),N_SPINS(c)::S(G)
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