MESON Chess Problem Database

Problem Display
PID: 197055 (n1b5/1ppp4/1nrp4/B1k3K1/p4R1R/P7/Q7/8 w - - 0 1)

Lebedev, U

Zadachi i Etyudi, 1996

n1b5/1ppp4/1nrp4/B1k3K1/p4R1R/P7/Q7/8

#2

6 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Sc4
      • 2.Qxc4#
    • 1...Sd5
      • 2.Qc4#
  • Tries
    • 1.Rb4?
      • 1...Sc4
        • 2.Qxc4#
      • 1...Sd5
        • 2.Rhc4#
        • 2.Qc4#
      • 1...d5!
    • 1.Rf5+?
      • 1...Sd5
        • 2.Rxd5#
        • 2.Qc4#
        • 2.Qxd5#
      • 1...d5!
    • 1.Qb1?
      • 1...Kd5
        • 2.Qf5#
      • 1...d5
        • 2.Qb4#
      • 1...Sd5
        • 2.Rc4#
      • 1...Sc4!
    • 1.Qb3?
      • 1...Sc4
        • 2.Qxc4#
      • 1...d5
        • 2.Qb4#
      • 1...Sd5
        • 2.Rc4#
        • 2.Qc4#
      • 1...axb3!
    • 1.Qc2+?
      • 1...Kd5
        • 2.Qf5#
      • 1...Sc4
        • 2.Qxc4#
      • 1...Kb5!
  • Keys
    • 1.Qe2!
      • 1...Kd5
        • 2.Rf5#
      • 1...Sc4
        • 2.Qxc4#
      • 1...d5
        • 2.Bb4#
      • 1...Sd5
        • 2.Qc4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • S(c);N_GUARD::QAR1(A),XS(c)
    • S(c);N_GUARD::QAR1(A)
  • Tries
    • Try
      • R(C);
      • Vars
        • S(c);N_GUARD::QAR1(A),XS(c)
      • Refutation
        • P(e);
    • Try
      • R(C);CHECK
      • Refutation
        • P(e);P_SPINP(e)
    • Try
      • Q(A);
      • Vars
        • K(b);P-FLIGHT::QAR2(A)
        • P(e);SBLOCK::QAB1(A)
        • S(c);N_GUARD,SBLOCK::R1(C)
      • Refutation
        • S(c);
    • Try
      • Q(A);
      • Vars
        • S(c);N_GUARD::QAR1(A),XS(c)
        • P(e);SBLOCK::QAB1(A)
      • Refutation
        • P(a);XQ(A)
    • Try
      • Q(A);CHECK
      • Vars
        • K(b);P-FLIGHT::QAR2(A)
        • S(c);N_GUARD,P_SPINS(c)::QAR1(A),XS(c)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • Q(A);
    • Vars
      • K(b);P-FLIGHT::R(C)
      • S(c);N_GUARD::QAR1(A),XS(c)
      • P(e);SBLOCK::B(E)
      • S(c);N_GUARD::QAR1(A)
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