MESON Chess Problem Database

Problem Display
PID: 262344 (B1q5/p2R1n2/3p2p1/R1pN1bN1/P2k1Bp1/1p6/1K2P2p/1nQ5 w - - 0 1)

Navon, Emanuel

Witztum, Menachem

6th HM., SuperProblem, 2014

B1q5/p2R1n2/3p2p1/R1pN1bN1/P2k1Bp1/1p6/1K2P2p/1nQ5

#2

10 + 12

6490 yacpdb 2022

SOLUTION

  • SOUND
  • Sets
    • 1...Bd3
      • 2.e3#
    • 1...Be4
      • 2.Se6#
    • 1...Sd2
      • 2.Qc3#
    • 1...Sa3
      • 2.Qc3#
    • 1...Sc3
      • 2.Qxc3#
    • 1...Se5
      • 2.Be3#
    • 1...c4
      • 2.Qe3#
  • Tries
    • 1.Sb4?
      • threat
        • 2.e3#
      • 1...cxb4
        • 2.Be3#
        • 2.Rd5#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Qe8
        • 2.Qxc5#
      • 1...Bc2!
    • 1.Sb6?
      • threat
        • 2.Qe3#
        • 2.Qc4#
      • 1...Qa6
        • 2.Qe3#
        • 2.Qxc5#
      • 1...Qe8
        • 2.Qc4#
        • 2.Qxc5#
      • 1...Bc2
        • 2.Se6#
        • 2.Qe3#
      • 1...Bd3
        • 2.Se6#
        • 2.Qe3#
        • 2.e3#
      • 1...Be6
        • 2.Sxe6#
        • 2.Qe3#
      • 1...Sd2
        • 2.Qc3#
      • 1...Sa3
        • 2.Qe3#
        • 2.Qc3#
      • 1...Sc3
        • 2.Qe3#
        • 2.Qxc3#
      • 1...Se5
        • 2.Be3#
        • 2.Rxd6#
        • 2.Qe3#
      • 1...c4
        • 2.Be3#
        • 2.Rd5#
        • 2.Qe3#
      • 1...axb6!
    • 1.Sf3+?
      • 1...Ke4
        • 2.Sc3#
        • 2.Sf6#
        • 2.Qe3#
        • 2.Qxb1#
        • 2.Qc4#
      • 1...gxf3!
    • 1.Se6+?
      • 1...Ke4
        • 2.Sc3#
        • 2.Sf6#
        • 2.Qe3#
        • 2.Qxb1#
        • 2.Qh1#
        • 2.Qc4#
      • 1...Bxe6!
    • 1.Qd2+?
      • 1...Kc4
        • 2.Se3#
      • 1...Bd3
        • 2.Qxd3#
      • 1...Sxd2!
  • Keys
    • 1.Se3!
      • threat
        • 2.Qc4#
      • 1...Qa6
        • 2.Qxc5#
      • 1...Bc2
        • 2.Se6#
      • 1...Bd3
        • 2.Se6#
      • 1...Be6
        • 2.Sxe6#
      • 1...Sd2
        • 2.Qc3#
      • 1...Sa3
        • 2.Qc3#
      • 1...Sc3
        • 2.Qxc3#
      • 1...Se5
        • 2.Rxd6#
      • 1...c4
        • 2.Rd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 3
    • REMOVED MATES = 1
  • Sets
    • B(g);SBLOCK::P(C)
    • B(g);N_GUARD,SBLOCK::S(H)
    • S(a);N_GUARD::QAB1(A)
    • S(a);N_GUARD::QAB1(A),XS(a)
    • S(k);SBLOCK::B(E)
    • P(f);SBLOCK::QAB1(A)
  • Tries
    • Try
      • S(G);P_PINP(h)
      • Threat
        • P(C)
      • Vars
        • S(a);N_GUARD::QAB1(A),XS(a)
        • Q(l);N_GUARD::QAB1(A),XP(f)
      • Refutation
        • B(g);
    • Try
      • S(G);P_PINP(h)
      • Threat
        • DUALS(2)
      • Vars
        • S(a);N_GUARD::QAB1(A)
      • Refutation
        • P(j);XS(G)
    • Try
      • S(H);CHECK
      • Refutation
        • P(e);XS(H)
    • Try
      • S(H);CHECK
      • Refutation
        • B(g);XS(H)
    • Try
      • Q(A);CHECK
      • Vars
        • K(d);P-FLIGHT,S_CUTB(g),S_CUTS(a)::S(G)
        • B(g);N_GUARD,P_SPINB(g)::QAR1(A),XB(g)
      • Refutation
        • S(a);XQ(A)
  • Actual
    • S(G);P_PINP(h)
    • Threat
      • QAR1(A)
    • Vars
      • Q(l);N_GUARD::QAB1(A),XP(f)
      • B(g);N_GUARD::S(H)
      • B(g);N_GUARD::S(H),XB(g)
      • S(a);N_GUARD::QAB1(A)
      • S(a);N_GUARD::QAB1(A),XS(a)
      • S(k);N_GUARD::R(I),XP(h)
      • P(f);OGATE::R1(F)
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