MESON Chess Problem Database

Problem Display
PID: 160229 (2R5/4Q1p1/3p2P1/K1Np1P1p/2pk4/1p1rN3/nP6/5B2 w - - 0 1)

Willemsens, Luis Cornelis

Suomen Shakki, 1956

2R5/4Q1p1/3p2P1/K1Np1P1p/2pk4/1p1rN3/nP6/5B2

#2

9 + 9

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...c3
      • 2.Sxb3#
  • Tries
    • 1.Sg2?
      • threat
        • 2.Qxg7#
      • 1...c3
        • 2.Sxb3#
      • 1...Re3
        • 2.Qxe3#
      • 1...dxc5!
    • 1.Sg4?
      • threat
        • 2.Qxg7#
      • 1...dxc5
        • 2.Qe5#
      • 1...c3
        • 2.Sxb3#
      • 1...Re3
        • 2.Qxe3#
      • 1...hxg4!
    • 1.Sxb3+?
      • 1...Rxb3
        • 2.Sc2#
      • 1...cxb3!
    • 1.Qh4+?
      • 1...Ke5
        • 2.Sd7#
        • 2.Re8#
      • 1...Kxe3!
    • 1.f6?
      • threat
        • 2.Sf5#
      • 1...c3
        • 2.Sxb3#
      • 1...Rxe3!
  • Keys
    • 1.Sxc4!
      • threat
        • 2.Qh4#
      • 1...Kxc4
        • 2.Se6#
      • 1...dxc4
        • 2.Qe4#
      • 1...Re3
        • 2.Qxe3#
      • 1...Rf3
        • 2.Qxg7#
      • 1...Rg3
        • 2.Qxg7#
      • 1...Rh3
        • 2.Qxg7#
      • 1...Sc3
        • 2.Sxb3#
      • 1...h4
        • 2.Qxh4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 1
  • Sets
    • P(d);N_GUARD,S_CUTR(c)::S(E),XP(b)
  • Tries
    • Try
      • S(C);
      • Threat
        • QAB(H),XP(i)
      • Vars
        • P(d);N_GUARD,S_CUTR(c)::S(E),XP(b)
        • R(c);N_GUARD::QAB1(H),XR(c)
      • Refutation
        • P(h);XS(E)
    • Try
      • S(C);
      • Threat
        • QAB(H),XP(i)
      • Vars
        • P(h);N_GUARD,XS(E)::QAB1(H)
        • P(d);N_GUARD,S_CUTR(c)::S(E),XP(b)
        • R(c);N_GUARD::QAB1(H),XR(c)
      • Refutation
        • P(g);XS(C)
    • Try
      • S(E);CHECK,XP(b)
      • Vars
        • R(c);XS(E)::S(C)
      • Refutation
        • P(d);XS(E)
    • Try
      • Q(H);CHECK
      • Refutation
        • K(e);S_FLIGHT,XS(C)
    • Try
      • P(F);
      • Threat
        • S(C)
      • Vars
        • P(d);N_GUARD,S_CUTR(c)::S(E),XP(b)
      • Refutation
        • R(c);XS(C)
  • Actual
    • S(C);XP(d)
    • Threat
      • QAR(H)
    • Vars
      • K(e);P-FLIGHT,P_SPINR(c),XS(C)::R(I)+S(E)
      • P(f);N_GUARD,SBLOCK,XS(C)::QAR1(H)
      • R(c);N_GUARD::QAB1(H),XR(c)
      • R(c);::QAB(H),XP(i)
      • S(a);S_CUTR(c)::S(E),XP(b)
      • P(g);::QAR(H),XP(g)
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