MESON Chess Problem Database

Problem Display
PID: 181944 (B1N2n2/8/2P1p3/1bpk1pN1/2RP1p1n/PR6/1rp1Q3/2b2K2 w - - 0 1)

Forster, Klaus

10/11 Place, 10. WCCT, 2016-2017

B1N2n2/8/2P1p3/1bpk1pN1/2RP1p1n/PR6/1rp1Q3/2b2K2

#2

10 + 11

16140 10. WCCT Award 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Sg6
      • 2.Qxe6#
    • 1...Sd7
      • 2.Qxe6#
    • 1...Sh7
      • 2.Qxe6#
  • Tries
    • 1.Rbc3?
      • threat
        • 2.Qe5#
      • 1...Bxc4
        • 2.Qxc4#
      • 1...cxd4
        • 2.Rc5#
      • 1...Sf3
        • 2.Qxf3#
      • 1...Shg6
        • 2.Qf3#
      • 1...Sfg6
        • 2.Qxe6#
      • 1...Sd7
        • 2.Qxe6#
      • 1...e5
        • 2.Qxe5#
      • 1...Be3!
    • 1.Rxb5?
      • threat
        • 2.Rbxc5#
        • 2.c7#
      • 1...Sd7
        • 2.Qxe6#
        • 2.cxd7#
        • 2.c7#
      • 1...Rxb5!
    • 1.Qd3?
      • threat
        • 2.Rxc5#
      • 1...Bxc4
        • 2.c7#
      • 1...cxd4
        • 2.Qxd4#
      • 1...Sd7!
  • Keys
    • 1.Rd3!
      • threat
        • 2.Rxc5#
      • 1...Kxc4
        • 2.Sb6#
      • 1...Bxc4
        • 2.Qe5#
      • 1...cxd4
        • 2.Rdxd4#
      • 1...Sd7
        • 2.Qxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • S(k);N_GUARD::QAB1(B),XP(j)
  • Tries
    • Try
      • R(D);
      • Threat
        • QAR1(B)
      • Vars
        • B(f);OGATE,P_PINQ(B),XR(E)::QAB1(B),XB(f)
        • P(g);SBLOCK,XP(F)::R1(E)
        • S(e);N_GUARD::QAB(B),XS(e)
        • S(e);N_GUARD::QAB(B)
        • S(k);N_GUARD::QAB1(B),XP(j)
        • P(j);::QAR1(B),XP(j)
      • Refutation
        • B(a);
    • Try
      • R(D);P_PINP(g),XB(f)
      • Threat
        • DUALS(2)
      • Refutation
        • R(b);N_SPINP(g),XR(D)
    • Try
      • Q(B);
      • Threat
        • R1(E),XP(g)
      • Vars
        • B(f);N_GUARD,P_PINQ(B),XR(E)::B(I)+P(H)
        • P(g);OGATE,P_SPINP(g),XP(F)::QAR1(B),XP(g)
      • Refutation
        • S(k);
  • Actual
    • R(D);
    • Threat
      • R1(E),XP(g)
    • Vars
      • K(h);S_FLIGHT,XR(E)::S(J)
      • B(f);SBLOCK,XR(E)::QAR1(B)
      • P(g);OGATE,P_SPINP(g),XP(F)::R1(D),XP(g)
      • S(k);N_GUARD::QAB1(B),XP(j)
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