MESON Chess Problem Database

Problem Display
PID: 106476 (2b5/1N3p1r/RN2B2p/p3kPn1/r2p1Rn1/4p1P1/2Q1K3/B7 w - - 0 1)

Salai, Ladislav

Praca, 1954

2b5/1N3p1r/RN2B2p/p3kPn1/r2p1Rn1/4p1P1/2Q1K3/B7

#2

10 + 11

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Ra2
      • 2.Bxd4#
    • 1...Ra3
      • 2.Bxd4#
    • 1...Bxb7
      • 2.Sd7#
    • 1...Bd7
      • 2.Sxd7#
    • 1...Sf6
      • 2.Qc7#
    • 1...f6
      • 2.Qc5#
  • Tries
    • 1.Rxa5+?
      • 1...Rxa5
        • 2.Bxd4#
      • 1...Kf6!
  • Keys
    • 1.f6!
      • threat
        • 2.Qf5#
      • 1...Kxe6
        • 2.Qf5#
      • 1...Bxe6
        • 2.Qc7#
      • 1...Bxb7
        • 2.Sd7#
      • 1...fxe6
        • 2.Qc5#
      • 1...Ra2
        • 2.Sc4#
      • 1...Se4
        • 2.Qxe4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 4
    • REMOVED MATES = 4
  • Sets
    • R(b);N_GUARD,P_PINQ(B)::B(A),XP(c)
    • R(b);N_GUARD::B(A),XP(c)
    • B(k);N_GUARD,XS(J)::S(H)
    • B(k);N_GUARD::S(H),XB(k)
    • S(d);SBLOCK::QAB(B)
    • P(i);SBLOCK::QAR2(B)
  • Tries
    • Try
      • R(G);CHECK,XP(e)
      • Vars
        • R(b);XR(G)::B(A),XP(c)
      • Refutation
        • K(f);S_FLIGHT
  • Actual
    • P(F);
    • Threat
      • QAR1(B)
    • Vars
      • K(f);N_SPINP(c),P-FLIGHT,XB(I)::QAB1(B)
      • B(k);SBLOCK,XB(I)::QAB(B)
      • B(k);N_GUARD,XS(J)::S(H)
      • P(i);SBLOCK,XB(I)::QAR2(B)
      • R(b);N_GUARD,P_PINQ(B)::S(H)
      • S(g);N_GUARD::QAR1(B),XS(g)
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