MESON Chess Problem Database

Problem Display
PID: 229400 (2B2B2/8/4P3/3k4/P1n3P1/pR3N2/K6Q/4N3 w - - 0 1)

Skrinnik, Oleksandr Petrovich

Sachova skladba, 2004

2B2B2/8/4P3/3k4/P1n3P1/pR3N2/K6Q/4N3

#2

10 + 3

5454 Near Snap 2021
6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Ke4
      • 2.Bb7#
    • 1...Kc6
      • 2.Bb7#
  • Tries
    • 1.Rd3+?
      • 1...Ke4
        • 2.Sg5#
        • 2.Bb7#
      • 1...Kc6!
    • 1.Rb4?
      • 1...Ke4
        • 2.Qe5#
      • 1...Kc6
        • 2.Bb7#
      • 1...Sb2
        • 2.Qd6#
      • 1...Sd2
        • 2.Qd6#
      • 1...Se3
        • 2.Qd6#
      • 1...Sa5
        • 2.Qd6#
      • 1...Sb6
        • 2.Qd6#
      • 1...Sd6
        • 2.Qxd6#
      • 1...Se5!
    • 1.Rb5+?
      • 1...Kc6
        • 2.Sd4#
        • 2.Bb7#
        • 2.Bd7#
      • 1...Ke4!
    • 1.Qe5+?
      • 1...Kc6
        • 2.Sd4#
        • 2.Bb7#
        • 2.Bd7#
        • 2.Qc5#
      • 1...Sxe5!
    • 1.Qd6+?
      • 1...Ke4
        • 2.Sg5#
        • 2.Bb7#
        • 2.Qd4#
      • 1...Sxd6!
    • 1.Qc2?
      • 1...Kc6
        • 2.Qxc4#
      • 1...Se5
        • 2.Rb5#
      • 1...Sb2
        • 2.Rb5#
      • 1...Sd2
        • 2.Rb5#
      • 1...Se3
        • 2.Rb5#
      • 1...Sa5
        • 2.Rb5#
      • 1...Sb6
        • 2.Rb5#
      • 1...Sd6!
    • 1.Qd2+?
      • 1...Ke4
        • 2.Bb7#
        • 2.Qd4#
      • 1...Kc6
        • 2.Qd7#
      • 1...Sxd2!
    • 1.Qh5+?
      • 1...Ke4
        • 2.Qf5#
      • 1...Kc6
        • 2.Qc5#
      • 1...Se5!
  • Keys
    • 1.Rc3!
      • 1...Ke4
        • 2.Bb7#
      • 1...Kc6
        • 2.Qd6#
      • 1...Sb2
        • 2.Qe5#
      • 1...Sd2
        • 2.Qe5#
      • 1...Se3
        • 2.Qe5#
      • 1...Sa5
        • 2.Qe5#
      • 1...Se5
        • 2.Qxe5#
      • 1...Sb6
        • 2.Qe5#
      • 1...Sd6
        • 2.Qe5#

Anticipated by 18752(1958)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 1
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::B(I)
  • Tries
    • Try
      • R(D);CHECK
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(D);
      • Vars
        • K(c);P_SPINS(b),S_FLIGHT::QAR1(C)
        • K(c);S_FLIGHT::B(I)
        • S(b);N_GUARD::QAR1(C)
        • S(b);N_GUARD::QAR1(C),XS(b)
      • Refutation
        • S(b);
    • Try
      • R(D);CHECK
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(C);CHECK
      • Refutation
        • S(b);XQ(C)
    • Try
      • Q(C);CHECK
      • Refutation
        • S(b);XQ(C)
    • Try
      • Q(C);
      • Vars
        • K(c);P_SPINS(b),S_FLIGHT::QAR2(C),XS(b)
        • S(b);::R(D)
      • Refutation
        • S(b);
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);OGATE,S_FLIGHT::QAB1(C)
      • Refutation
        • S(b);XQ(C)
    • Try
      • Q(C);CHECK
      • Vars
        • K(c);S_FLIGHT::QAB1(C)
        • K(c);OGATE,S_FLIGHT::QAR1(C)
      • Refutation
        • S(b);P_SPINS(b)
  • Actual
    • R(D);
    • Vars
      • K(c);S_FLIGHT::B(I)
      • K(c);P_SPINS(b),S_FLIGHT::QAR1(C)
      • S(b);N_GUARD::QAR1(C)
      • S(b);N_GUARD::QAR1(C),XS(b)
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