MESON Chess Problem Database

Problem Display
PID: 208011 (8/8/6Q1/p2p3R/p2k4/Kp3P1N/1N6/8 w - - 0 1)

Medvedev, ?

Vsemirnaya Illustrantiya, 1873

8/8/6Q1/p2p3R/p2k4/Kp3P1N/1N6/8

#2

6 + 5

6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Kc3
      • 2.Qd3#
    • 1...Ke3
      • 2.Qd3#
  • Tries
    • 1.Sf4?
      • 1...Kc3
        • 2.Qd3#
      • 1...Kc5
        • 2.Rxd5#
      • 1...Ke3!
    • 1.Rh4+?
      • 1...Kc3
        • 2.Qd3#
      • 1...Ke3
        • 2.Qd3#
      • 1...Ke5
        • 2.Sd3#
      • 1...Kc5!
    • 1.Rxd5+?
      • 1...Kc3
        • 2.Qd3#
        • 2.Qc6#
      • 1...Ke3
        • 2.Qd3#
        • 2.Qe4#
      • 1...Kxd5!
    • 1.Rg5?
      • 1...Kc3
        • 2.Qd3#
      • 1...Ke3
        • 2.Qd3#
      • 1...Kc5!
    • 1.Qb1?
      • 1...Kc3
        • 2.Qd3#
      • 1...Ke3
        • 2.Qd3#
      • 1...Kc5!
    • 1.Qc2?
      • 1...Ke3
        • 2.Qd3#
        • 2.Qf2#
      • 1...bxc2!
    • 1.Qf5?
      • 1...Kc3
        • 2.Qd3#
      • 1...Ke3
        • 2.Qd3#
      • 1...Kc5!
    • 1.Qh7?
      • 1...Kc3
        • 2.Qd3#
      • 1...Ke3
        • 2.Qd3#
      • 1...Kc5!
    • 1.Qa6?
      • 1...Kc3
        • 2.Qd3#
      • 1...Ke3
        • 2.Qd3#
      • 1...Kc5!
    • 1.Qe6?
      • 1...Kc5
        • 2.Rxd5#
      • 1...Kc3!
    • 1.f4?
      • 1...Kc3
        • 2.Qd3#
      • 1...Ke3
        • 2.Qd3#
      • 1...Kc5!
  • Keys
    • 1.Rh6!
      • 1...Kc3
        • 2.Qd3#
      • 1...Ke3
        • 2.Qd3#
      • 1...Kc5
        • 2.Qb6#
      • 1...Ke5
        • 2.Qf6#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::QAR1(F)
  • Tries
    • Try
      • S(D);
      • Vars
        • K(c);S_FLIGHT::QAR1(F)
        • K(c);P_SPINP(e),S_FLIGHT::R1(E),XP(e)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(E);CHECK
      • Vars
        • K(c);S_FLIGHT::QAR1(F)
        • K(c);S_FLIGHT::S(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(E);CHECK,XP(e)
      • Refutation
        • K(c);P-FLIGHT,XR(E)
    • Try
      • R(E);
      • Vars
        • K(c);S_FLIGHT::QAR1(F)
      • Refutation
        • K(c);P_SPINP(e),S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(c);S_FLIGHT::QAR1(F)
      • Refutation
        • K(c);P_SPINP(e),S_FLIGHT
    • Try
      • Q(F);
      • Refutation
        • P(a);XQ(F)
    • Try
      • Q(F);
      • Vars
        • K(c);S_FLIGHT::QAR1(F)
      • Refutation
        • K(c);P_SPINP(e),S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(c);S_FLIGHT::QAR1(F)
      • Refutation
        • K(c);P_SPINP(e),S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(c);S_FLIGHT::QAR1(F)
      • Refutation
        • K(c);P_SPINP(e),S_FLIGHT
    • Try
      • Q(F);
      • Vars
        • K(c);P_SPINP(e),S_FLIGHT::R1(E),XP(e)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • P(C);
      • Vars
        • K(c);S_FLIGHT::QAR1(F)
      • Refutation
        • K(c);P_SPINP(e),S_FLIGHT
  • Actual
    • R(E);
    • Vars
      • K(c);S_FLIGHT::QAR1(F)
      • K(c);S_FLIGHT::QAB1(F)
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