MESON Chess Problem Database

Problem Display
PID: 225419 (2Rr4/8/2P1N3/2pkp3/R1N2nQ1/1K1Pb3/4P3/3n4 w - - 0 1)

Bunka, Vladislav

Praca, 2001

2Rr4/8/2P1N3/2pkp3/R1N2nQ1/1K1Pb3/4P3/3n4

#2

9 + 7

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rd6
      • 2.Sb6#
    • 1...Bc1
      • 2.e4#
    • 1...Bg1
      • 2.e4#
    • 1...Bd2
      • 2.e4#
    • 1...Bf2
      • 2.e4#
    • 1...Bd4
      • 2.e4#
    • 1...Sxe6
      • 2.Qe4#
    • 1...e4
      • 2.Qf5#
  • Tries
    • 1.Sc7+?
      • 1...Kd4
        • 2.Rxd8#
      • 1...Kxc6!
    • 1.Qf3+?
      • 1...e4
        • 2.Qxe4#
      • 1...Kxe6!
  • Keys
    • 1.Sd4!
      • threat
        • 2.Rxd8#
      • 1...Kxd4
        • 2.Rxd8#
      • 1...Rxc8
        • 2.Qd7#
      • 1...Bxd4
        • 2.e4#
      • 1...cxd4
        • 2.Ra5#
      • 1...exd4
        • 2.Qf5#
      • 1...Rd6
        • 2.Sb6#
      • 1...Rd7
        • 2.Qxd7#
      • 1...Re8
        • 2.Qd7#
      • 1...Rf8
        • 2.Qd7#
      • 1...Rg8
        • 2.Qd7#
      • 1...Rh8
        • 2.Qd7#
      • 1...Se6
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 9
    • REMOVED MATES = 5
  • Sets
    • R(g);SBLOCK::S(E)
    • B(b);OGATE::P(A)
    • S(c);OGATE,SBLOCK,XS(H)::QAB1(F)
    • P(f);OGATEB::QAR2(F)
  • Tries
    • Try
      • S(H);CHECK
      • Vars
        • K(e);P-FLIGHT,P_SPINS(c)::R(I),XR(g)
      • Refutation
        • K(e);S_FLIGHT,XP(G)
    • Try
      • Q(F);CHECK
      • Vars
        • P(f);P_SPINP(f)::QAB1(F),XP(f)
      • Refutation
        • K(e);S_FLIGHT,XS(H)
  • Actual
    • S(H);
    • Threat
      • R(I),XR(g)
    • Vars
      • K(e);P-FLIGHT,P_SPINS(c),XS(H)::R(I),XR(g)
      • R(g);N_GUARD,XR(I)::QAR2(F)
      • B(b);OGATE,SBLOCK,XS(H)::P(A)
      • P(d);OGATEB,SBLOCK,XS(H)::R(D)
      • P(f);OGATEB,SBLOCK,XS(H)::QAR2(F)
      • R(g);SBLOCK::S(E)
      • R(g);N_GUARD::QAR2(F),XR(g)
      • R(g);N_GUARD::QAR2(F)
      • S(c);OGATE::QAB1(F)
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