MESON Chess Problem Database

Problem Display
PID: 154868 (8/KnP3q1/1R1Np3/ppPk4/R1pN1Qn1/BPP1rp1B/8/8 w - - 0 1)

le Grand, Henk

Probleemblad, 2014

8/KnP3q1/1R1Np3/ppPk4/R1pN1Qn1/BPP1rp1B/8/8

#2

12 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd4
      • 2.Qxd4#
    • 1...Rxc3
      • 2.Qe4#
    • 1...Rd3
      • 2.Qe4#
    • 1...Re4
      • 2.Qxe4#
    • 1...Se5
      • 2.Bxe6#
    • 1...Sxd6
      • 2.Rxd6#
    • 1...bxa4
      • 2.bxc4#
  • Tries
    • 1.S4xb5?
      • threat
        • 2.bxc4#
      • 1...Rxc3
        • 2.Qe4#
      • 1...Sxd6
        • 2.Rxd6#
      • 1...cxb3
        • 2.c4#
      • 1...e5
        • 2.Qxc4#
      • 1...Qd4
        • 2.Qxd4#
      • 1...Re4
        • 2.Qxe4#
      • 1...Se5
        • 2.Qd4#
      • 1...Qxc3!
    • 1.Rxb5?
      • threat
        • 2.bxc4#
      • 1...Rxc3
        • 2.Qe4#
      • 1...Sxd6
        • 2.cxd6#
      • 1...cxb3
        • 2.c4#
      • 1...Se5
        • 2.Bxe6#
      • 1...Qxd4!
    • 1.Qxf3+?
      • 1...Ke5
        • 2.Sc6#
      • 1...Re4
        • 2.Qxe4#
      • 1...Rxf3!
  • Keys
    • 1.S6xb5!
      • threat
        • 2.bxc4#
      • 1...Qxd4
        • 2.Qxd4#
      • 1...Rxc3
        • 2.Sxc3#
      • 1...cxb3
        • 2.c4#
      • 1...Se5
        • 2.Bxe6#
      • 1...Sd6
        • 2.Rxd6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • Q(j);OGATE,XS(F)::QAR1(G),XQ(j)
    • R(a);N_GUARD,XP(C)::QAB1(G)
    • R(a);N_GUARD::QAB1(G)
    • R(a);N_GUARD::QAB1(G),XR(a)
    • S(d);OGATE::B(D),XP(h)
    • S(i);OGATE,P_PINP(L),XS(J)::R1(I),XS(i)
    • P(f);N_GUARD,XR(E)::P(B),XP(c)
  • Tries
    • Try
      • S(F);XP(f)
      • Threat
        • P(B),XP(c)
      • Vars
        • R(a);N_GUARD,XP(C)::QAB1(G)
        • S(i);OGATE,P_PINP(L),XS(J)::R1(I),XS(i)
        • P(c);OGATE,XP(B)::P(C)
        • P(h);SBLOCK::QAB1(G),XP(c)
        • Q(j);N_GUARD::QAR1(G),XQ(j)
        • R(a);N_GUARD::QAB1(G),XR(a)
        • S(d);S_CUTQ(j)::QAR1(G)
      • Refutation
        • Q(j);XP(C)
    • Try
      • R(I);XP(f)
      • Threat
        • P(B),XP(c)
      • Vars
        • R(a);N_GUARD,XP(C)::QAB1(G)
        • S(i);OGATE,P_PINP(L),XS(J)::R(I)+P(H),XS(i)
        • P(c);OGATE,XP(B)::P(C)
        • S(d);OGATE::B(D),XP(h)
      • Refutation
        • Q(j);P_PINP(H),XS(F)
    • Try
      • Q(G);CHECK,XP(b)
      • Vars
        • K(g);P-FLIGHT::S(F)
        • R(a);N_GUARD,P_SPINR(a)::QAB1(G),XR(a)
      • Refutation
        • R(a);XQ(G)
  • Actual
    • S(J);XP(f)
    • Threat
      • P(B),XP(c)
    • Vars
      • Q(j);OGATE,XS(F)::QAR1(G),XQ(j)
      • R(a);XP(C)::S(J),XR(a)
      • P(c);OGATE,XP(B)::P(C)
      • S(d);OGATE::B(D),XP(h)
      • S(i);N_GUARD,P_PINP(L)::R1(I),XS(i)
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