MESON Chess Problem Database

Problem Display
PID: 64438 (2R2B2/b2p1n2/4pQ2/3k2N1/r7/p7/K2P2Nr/3R1B2 w - - 0 1)

Prins, Hendrik

1st HM., Varsovie JT, 1982

2R2B2/b2p1n2/4pQ2/3k2N1/r7/p7/K2P2Nr/3R1B2

#2

9 + 8

3752 FIDE Album (1980-1982) 1988
721 Variantim 1992
5454 Near Snap 2007

SOLUTION

  • SOUND
  • Sets
    • 1...Rc4
      • 2.Bxc4#
    • 1...Rd4
      • 2.Se3#
    • 1...Rf4
      • 2.Sxf4#
    • 1...Ra5
      • 2.Sf4#
      • 2.Bc4#
    • 1...Ra6
      • 2.Sf4#
      • 2.Bc4#
    • 1...Be3
      • 2.Sxe3#
    • 1...Bd4
      • 2.Sf4#
    • 1...Bc5
      • 2.Rxc5#
    • 1...Bb8
      • 2.Se3#
      • 2.Rc5#
  • Tries
    • 1.Qf3+?
      • 1...Kd4
        • 2.Qe4#
      • 1...Re4
        • 2.Qxe4#
      • 1...Ke5!
    • 1.Qxe6+?
      • 1...Kd4
        • 2.Sf3#
        • 2.Qe4#
      • 1...dxe6!
  • Keys
    • 1.d4!
      • threat
        • 2.Qf3#
      • 1...Rxg2+
        • 2.Bxg2#
      • 1...Rxd4
        • 2.Bc4#
      • 1...Bxd4
        • 2.Rc5#
      • 1...Sxg5
        • 2.Qe5#
      • 1...Rh3
        • 2.Sf4#
      • 1...Rh4
        • 2.Se3#
      • 1...Se5
        • 2.Qxe5#
      • 1...Sd6
        • 2.Qe5#
      • 1...e5
        • 2.Qxf7#

Anticipated by 10755(1967)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 7
    • REMOVED MATES = 4
  • Sets
    • R(c);N_GUARD::B(B),XR(c)
    • R(c);S_CUTB(f)::S(E)
    • R(c);N_GUARD::S(E),XR(c)
    • B(f);N_GUARD::S(E),XB(f)
    • B(f);S_CUTR(c)::S(E)
    • B(f);N_GUARD::R1(H),XB(f)
  • Tries
    • Try
      • Q(G);CHECK
      • Vars
        • K(d);P-FLIGHT::QAR1(G)
        • R(c);N_GUARD,P_SPINR(c)::QAB1(G),XR(c)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • Q(G);CHECK,XP(e)
      • Refutation
        • P(g);XQ(G)
  • Actual
    • P(D);P_SPINS(E)
    • Threat
      • QAB(G)
    • Vars
      • R(a);CHECK,OGATE,XS(E)::B(B),XR(a)
      • R(c);N_GUARD,P_SPINR(c),XP(D)::B(B)
      • B(f);N_GUARD,P_SPINB(f),XP(D)::R1(H)
      • S(h);N_GUARD,XS(F)::QAR1(G)
      • R(a);N_PINS(E)::S(E)
      • S(h);N_GUARD::QAR1(G),XS(h)
      • S(h);N_GUARD::QAR1(G)
      • P(e);OGATEB::QAB(G),XS(h)
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