MESON Chess Problem Database

Problem Display
PID: 10616 (8/8/KnP2pp1/1P3RP1/3Nk2p/4P2P/bB4N1/n2Q4 w - - 0 1)

Lender, Baruch

7th Comm., Israel Ring Ty., 1966

8/8/KnP2pp1/1P3RP1/3Nk2p/4P2P/bB4N1/n2Q4

#2

11 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sc2
      • 2.Qxc2#
    • 1...Sb3
      • 2.Qc2#
  • Tries
    • 1.Se1?
      • threat
        • 2.Qf3#
        • 2.Qd3#
      • 1...Kxe3
        • 2.Qe2#
        • 2.Qd3#
      • 1...Bb1
        • 2.Qf3#
      • 1...Bc4
        • 2.Qf3#
      • 1...gxf5!
    • 1.Sf4?
      • threat
        • 2.Qf3#
        • 2.Qd3#
      • 1...Kxe3
        • 2.Qe2#
        • 2.Qe1#
      • 1...Bb1
        • 2.Qf3#
      • 1...Bc4
        • 2.Qf3#
      • 1...gxf5!
    • 1.Se6?
      • threat
        • 2.Rf4#
      • 1...Kxf5
        • 2.Qg4#
      • 1...fxg5
        • 2.Re5#
      • 1...gxf5
        • 2.Sc5#
      • 1...Sd5!
    • 1.Qb1+?
      • 1...Sc2
        • 2.Qxc2#
      • 1...Bxb1!
  • Keys
    • 1.Sb3!
      • threat
        • 2.Rf4#
      • 1...Kxf5
        • 2.Qg4#
      • 1...fxg5
        • 2.Re5#
      • 1...gxf5
        • 2.Sc5#
      • 1...Sd5
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 2
  • Sets
    • S(a);N_GUARD::QAB(A),XS(a)
    • S(a);N_GUARD::QAB(A)
  • Tries
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • B(b);::QAB1(A)
        • B(b);P_PINP(G)::QAB1(A)
      • Refutation
        • P(g);XR(H)
    • Try
      • S(C);
      • Threat
        • DUALS(2)
      • Vars
        • B(b);::QAB1(A)
        • B(b);P_PINP(G)::QAB1(A)
      • Refutation
        • P(g);XR(H)
    • Try
      • S(F);
      • Threat
        • R1(H)
      • Vars
        • K(c);S_FLIGHT,XR(H)::QAB1(A)
        • P(f);N_GUARD,XP(I)::R1(H)
        • P(g);SBLOCK,XR(H)::S(F)
      • Refutation
        • S(e);
    • Try
      • Q(A);CHECK
      • Vars
        • S(a);N_GUARD,P_SPINS(a)::QAB(A),XS(a)
      • Refutation
        • B(b);XQ(A)
  • Actual
    • S(F);
    • Threat
      • R1(H)
    • Vars
      • K(c);S_FLIGHT,XR(H)::QAB1(A)
      • P(f);N_GUARD,XP(I)::R1(H)
      • P(g);SBLOCK,XR(H)::S(F)
      • S(e);N_GUARD::QAB1(A),XS(e)
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