MESON Chess Problem Database

Problem Display
PID: 162950 (6br/rp3Ppp/PBRN2P1/2PkPP2/BRN1pP1Q/2P1n3/8/2K3b1 w - - 0 1)

Navon, Emanuel

Witztum, Menachem

StrateGems, 2012

6br/rp3Ppp/PBRN2P1/2PkPP2/BRN1pP1Q/2P1n3/8/2K3b1

#2

16 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Bh2
      • 2.Sxe3#
  • Tries
    • 1.Sa5?
      • threat
        • 2.Rd4#
      • 1...Sxf5
        • 2.Bb3#
      • 1...Sd1
        • 2.Bb3#
      • 1...Sf1
        • 2.Bb3#
      • 1...Sc2
        • 2.Bb3#
      • 1...Sg2
        • 2.Bb3#
      • 1...Sg4
        • 2.Bb3#
      • 1...Sc4!
    • 1.Sb5?
      • threat
        • 2.Sc7#
        • 2.Rd6#
      • 1...Kxc6
        • 2.Sc7#
      • 1...Sxc4
        • 2.Sc7#
      • 1...Sxf5
        • 2.Sc7#
      • 1...bxa6
        • 2.Rd6#
      • 1...bxc6!
    • 1.Se8?
      • threat
        • 2.Sc7#
        • 2.Rd6#
        • 2.Qd8#
      • 1...Sxc4
        • 2.Sc7#
      • 1...Sxf5
        • 2.Sc7#
      • 1...bxa6
        • 2.Rd6#
      • 1...Ra8
        • 2.Sc7#
        • 2.Rd6#
      • 1...bxc6!
    • 1.Qe1?
      • threat
        • 2.Qd2#
      • 1...Sxc4
        • 2.Qxe4#
      • 1...Sd1
        • 2.Qxe4#
      • 1...Sf1
        • 2.Qxe4#
      • 1...Sc2
        • 2.Qxe4#
      • 1...Sg2
        • 2.Qxe4#
      • 1...Sg4
        • 2.Qxe4#
      • 1...Sxf5!
    • 1.Qe7?
      • threat
        • 2.Qe6#
      • 1...Bxf7
        • 2.Qxf7#
      • 1...Sxf5!
  • Keys
    • 1.Qd8!
      • threat
        • 2.Sxb7#
        • 2.Sc8#
        • 2.Se8#
      • 1...Bxf7
        • 2.Se8#
      • 1...Sxc4
        • 2.Sxc4#
      • 1...Sxf5
        • 2.Sxf5#
      • 1...bxa6
        • 2.Sb7#
      • 1...bxc6
        • 2.Sb7#
      • 1...Ra8
        • 2.Sc8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • B(a);N_GUARD::S(E),XS(b)
  • Tries
    • Try
      • S(E);
      • Threat
        • R1(D)
      • Vars
        • S(b);N_GUARD,XP(J)::B(C)
        • S(b);N_GUARD::B(C)
      • Refutation
        • S(b);
    • Try
      • S(N);
      • Threat
        • DUALS(2)
      • Vars
        • K(d);S_FLIGHT,XR(M)::B(C)+S(N)
        • S(b);XS(E)::S(N)
        • S(b);XP(J)::S(N)
        • P(f);XP(K)::R1(M)
      • Refutation
        • P(f);XR(M)
    • Try
      • S(N);
      • Threat
        • DUALS(3)
      • Vars
        • S(b);XS(E)::S(N)
        • S(b);XP(J)::S(N)
        • P(f);XP(K)::R1(M)
      • Refutation
        • P(f);XR(M)
    • Try
      • Q(G);
      • Threat
        • QAR(G)
      • Vars
        • S(b);OGATE,XS(E)::QAB1(G),XP(c)
        • S(b);OGATE::QAB1(G),XP(c)
      • Refutation
        • S(b);XP(J)
    • Try
      • Q(G);
      • Threat
        • QAB1(G)
      • Vars
        • B(i);OGATE,XP(P)::QAB(G),XB(i)
      • Refutation
        • S(b);XP(J)
  • Actual
    • Q(G);
    • Threat
      • DUALS(3)
    • Vars
      • B(i);XP(P)::QAR(G)+S(N)
      • S(b);XS(E)::QAR(G)+S(N),XS(b)
      • S(b);XP(J)::QAR(G)+S(N),XS(b)
      • P(f);XP(K)::QAR(G)+S(N)
      • P(f);XR(M)::QAR(G)+S(N)
      • R(e);::QAR(G)+S(N)
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