MESON Chess Problem Database

Problem Display
PID: 187613 (8/8/1p6/1PRp2P1/K2k1N1Q/5p2/3N1P2/8 w - - 0 1)

Prokes, Ladislav

Vynalezy a pokroky, 1909

8/8/1p6/1PRp2P1/K2k1N1Q/5p2/3N1P2/8

#2

8 + 4

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Ke5
      • 2.Rxd5#
    • 1...bxc5
      • 2.Qh8#
  • Tries
    • 1.Ka3?
      • 1...Ke5
        • 2.Rxd5#
      • 1...bxc5
        • 2.Qh8#
      • 1...Kxc5!
    • 1.Kb3?
      • threat
        • 2.Rxd5#
      • 1...Ke5
        • 2.Rxd5#
      • 1...bxc5
        • 2.Qh8#
      • 1...Kxc5!
    • 1.Kb4?
      • threat
        • 2.Rxd5#
        • 2.Qh8#
      • 1...Ke5
        • 2.Rxd5#
      • 1...bxc5+!
    • 1.Sg6+?
      • 1...Kxc5
        • 2.Qb4#
      • 1...Kd3!
    • 1.Qg3?
      • 1...Kxc5
        • 2.Se6#
      • 1...Ke5
        • 2.Rxd5#
      • 1...bxc5!
    • 1.Qh6?
      • 1...Ke5
        • 2.Qf6#
      • 1...bxc5
        • 2.Qg7#
        • 2.Qf6#
        • 2.Qh8#
      • 1...Kxc5!
    • 1.g6?
      • 1...Ke5
        • 2.Rxd5#
      • 1...bxc5
        • 2.Qf6#
        • 2.Qh8#
      • 1...Kxc5!
  • Keys
    • 1.Qh2!
      • 1...Kxc5
        • 2.Se6#
      • 1...Ke5
        • 2.Rxd5#
      • 1...bxc5
        • 2.Qh8#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • K(b);P_SPINP(c),S_FLIGHT::R1(G),XP(c)
    • P(d);SBLOCK,XR(G)::QAB(E)
  • Tries
    • Try
      • K(C);P-FLIGHT
      • Vars
        • K(b);P_SPINP(c),S_FLIGHT::R1(G),XP(c)
        • P(d);SBLOCK,XR(G)::QAB(E)
      • Refutation
        • K(b);S_FLIGHT,XR(G)
    • Try
      • K(C);S_FLIGHT
      • Threat
        • R1(G),XP(c)
      • Vars
        • K(b);P_SPINP(c),S_FLIGHT::R1(G),XP(c)
        • P(d);SBLOCK,XR(G)::QAB(E)
      • Refutation
        • K(b);S_FLIGHT,XR(G)
    • Try
      • K(C);P-FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • K(b);P_SPINP(c),S_FLIGHT::R1(G),XP(c)
      • Refutation
        • P(d);CHECK,XR(G)
    • Try
      • S(D);CHECK
      • Vars
        • K(b);OGATE,S_FLIGHT,XR(G)::QAB1(E)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(E);
      • Vars
        • K(b);S_FLIGHT,XR(G)::S(D)
        • K(b);P_SPINP(c),S_FLIGHT::R1(G),XP(c)
      • Refutation
        • P(d);XR(G)
    • Try
      • Q(E);
      • Vars
        • K(b);P_SPINP(c),S_FLIGHT::QAB1(E)
      • Refutation
        • K(b);S_FLIGHT,XR(G)
    • Try
      • P(H);
      • Vars
        • K(b);P_SPINP(c),S_FLIGHT::R1(G),XP(c)
      • Refutation
        • K(b);S_FLIGHT,XR(G)
  • Actual
    • Q(E);
    • Vars
      • K(b);S_FLIGHT,XR(G)::S(D)
      • K(b);P_SPINP(c),S_FLIGHT::R1(G),XP(c)
      • P(d);SBLOCK,XR(G)::QAB(E)
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