MESON Chess Problem Database

Problem Display
PID: 150249 (8/R7/4K3/1p6/p7/k7/2Q5/8 w - - 0 1)

Agapov, Igor Alexeyevich

Russian Chess Art, 2011

8/R7/4K3/1p6/p7/k7/2Q5/8

#2

3 + 3

15148 Sadier Collection 2014

SOLUTION

  • SOUND
  • Sets
    • 1...b4
      • 2.Rxa4#
  • Tries
    • 1.Ke5?
      • 1...b4
        • 2.Rxa4#
      • 1...Kb4!
    • 1.Kf5?
      • 1...b4
        • 2.Rxa4#
      • 1...Kb4!
    • 1.Kd6?
      • 1...b4
        • 2.Rxa4#
      • 1...Kb4!
    • 1.Kf6?
      • 1...b4
        • 2.Rxa4#
      • 1...Kb4!
    • 1.Kd7?
      • 1...b4
        • 2.Rxa4#
      • 1...Kb4!
    • 1.Ke7?
      • 1...b4
        • 2.Rxa4#
      • 1...Kb4!
    • 1.Kf7?
      • 1...b4
        • 2.Rxa4#
      • 1...Kb4!
    • 1.Ra5?
      • 1...b4
        • 2.Rxa4#
      • 1...Kb4!
    • 1.Ra6?
      • 1...b4
        • 2.Rxa4#
      • 1...Kb4!
    • 1.Rc7?
      • 1...Kb4
        • 2.Qc3#
      • 1...b4!
    • 1.Ra8?
      • 1...b4
        • 2.Rxa4#
      • 1...Kb4!
  • Keys
    • 1.Kd5!
      • 1...Kb4
        • 2.Qb2#
      • 1...b4
        • 2.Rxa4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • P(c);N_GUARD::R1(C),XP(b)
  • Tries
    • Try
      • K(B);P-FLIGHT
      • Vars
        • P(c);N_GUARD::R1(C),XP(b)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT
    • Try
      • K(B);S_FLIGHT
      • Vars
        • P(c);N_GUARD::R1(C),XP(b)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT
    • Try
      • K(B);P-FLIGHT
      • Vars
        • P(c);N_GUARD::R1(C),XP(b)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT
    • Try
      • K(B);P-FLIGHT
      • Vars
        • P(c);N_GUARD::R1(C),XP(b)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT
    • Try
      • K(B);S_FLIGHT
      • Vars
        • P(c);N_GUARD::R1(C),XP(b)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT
    • Try
      • K(B);P-FLIGHT
      • Vars
        • P(c);N_GUARD::R1(C),XP(b)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT
    • Try
      • K(B);S_FLIGHT
      • Vars
        • P(c);N_GUARD::R1(C),XP(b)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT
    • Try
      • R(C);
      • Vars
        • P(c);N_GUARD::R1(C),XP(b)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT
    • Try
      • R(C);
      • Vars
        • P(c);N_GUARD::R1(C),XP(b)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT
    • Try
      • R(C);N_PINP(b)
      • Vars
        • K(a);S_FLIGHT::QAB1(A)
      • Refutation
        • P(c);
    • Try
      • R(C);
      • Vars
        • P(c);N_GUARD::R1(C),XP(b)
      • Refutation
        • K(a);N_SPINP(b),S_FLIGHT
  • Actual
    • K(B);S_FLIGHT
    • Vars
      • K(a);N_SPINP(b),S_FLIGHT::QAR2(A)
      • P(c);N_GUARD::R1(C),XP(b)
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