MESON Chess Problem Database

Problem Display
PID: 175066 (8/2BQ4/1p6/2knp1r1/3R4/nK1p4/3N4/7b w - - 0 1)

Prikryl, Bohuzlav

Sachove listy, 1902

8/2BQ4/1p6/2knp1r1/3R4/nK1p4/3N4/7b

#2

5 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Sets
    • 1...Kxd4
      • 2.Bxb6#
    • 1...Rg2
      • 2.Rxd5#
      • 2.Qxd5#
    • 1...Sb1
      • 2.Rc4#
    • 1...Sc2
      • 2.Rc4#
    • 1...Sc4
      • 2.Rxc4#
    • 1...Sb5
      • 2.Rc4#
    • 1...exd4
      • 2.Bd6#
  • Tries
    • 1.Kxa3?
      • threat
        • 2.Sb3#
        • 2.Rc4#
      • 1...exd4
        • 2.Bd6#
      • 1...Rg4
        • 2.Sb3#
      • 1...Se3
        • 2.Sb3#
      • 1...b5
        • 2.Sb3#
      • 1...Kxd4!
    • 1.Qd6+?
      • 1...Kxd4
        • 2.Bxb6#
      • 1...Kb5!
  • Keys
    • 1.Kb2!
      • threat
        • 2.Sb3#
      • 1...Sc4+
        • 2.Rxc4#
      • 1...Kxd4
        • 2.Bxb6#
      • 1...exd4
        • 2.Bd6#
      • 1...Rg2
        • 2.Qxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 3
  • Sets
    • K(d);P_SPINS(e),S_FLIGHT,XR(C)::B(D),XP(h)
    • S(b);N_GUARD::R1(C)
    • S(b);N_GUARD::R1(C),XS(b)
    • P(f);SBLOCK,XR(C)::B(D)
  • Tries
    • Try
      • K(B);P-FLIGHT,XS(b)
      • Threat
        • DUALS(2)
      • Vars
        • P(f);SBLOCK,XR(C)::B(D)
        • R(g);::S(A)
        • S(e);::S(A)
        • P(h);::S(A)
      • Refutation
        • K(d);P_SPINS(e),S_FLIGHT,XR(C)
    • Try
      • Q(E);CHECK
      • Vars
        • K(d);P_SPINS(e),S_FLIGHT,XR(C)::B(D),XP(h)
      • Refutation
        • K(d);P-FLIGHT
  • Actual
    • K(B);P-FLIGHT
    • Threat
      • S(A)
    • Vars
      • S(b);CHECK,N_GUARD::R1(C),XS(b)
      • K(d);P_SPINS(e),S_FLIGHT,XR(C)::B(D),XP(h)
      • P(f);SBLOCK,XR(C)::B(D)
      • R(g);P_PINS(A),S_CUTB(a)::QAR1(E),XS(e)
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