MESON Chess Problem Database

Problem Display
PID: 197008 (4B3/3R4/1P6/BkPR4/1P2p3/4p3/2K1P3/8 w - - 0 1)

Massmann, Wilhelm Karl Heinrich

Deutsches Wochenschach, 1919

4B3/3R4/1P6/BkPR4/1P2p3/4p3/2K1P3/8

#2

9 + 3

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Ka6
      • 2.Ra7#
  • Tries
    • 1.Kb3?
      • threat
        • 2.Ra7#
      • 1...Ka6
        • 2.Ra7#
      • 1...Kc6!
    • 1.Rd2?
      • 1...Ka4
        • 2.R7d3#
      • 1...Kc4
        • 2.R7d4#
      • 1...Ka6
        • 2.Ra7#
      • 1...Kc6
        • 2.Ra7#
        • 2.Rc7#
        • 2.Re7#
        • 2.Rf7#
        • 2.Rg7#
        • 2.Rh7#
      • 1...exd2!
    • 1.Rd3?
      • 1...Ka4
        • 2.R7d4#
        • 2.R7d5#
        • 2.R7d6#
        • 2.Ra7#
        • 2.Rb7#
        • 2.Rc7#
        • 2.Re7#
        • 2.Rf7#
        • 2.Rg7#
        • 2.Rh7#
        • 2.Rd8#
      • 1...Kc4
        • 2.R7d4#
      • 1...Ka6
        • 2.Ra7#
      • 1...Kc6
        • 2.Ra7#
        • 2.Rc7#
        • 2.Re7#
        • 2.Rf7#
        • 2.Rg7#
        • 2.Rh7#
      • 1...exd3+!
    • 1.Rd4?
      • threat
        • 2.Ra7#
      • 1...Ka6
        • 2.Ra7#
      • 1...Kc6
        • 2.Ra7#
        • 2.Rc7#
        • 2.Re7#
        • 2.Rf7#
        • 2.Rg7#
        • 2.Rh7#
      • 1...Ka4!
    • 1.Re5?
      • 1...Ka4
        • 2.Rd3#
      • 1...Ka6
        • 2.Ra7#
      • 1...Kc6
        • 2.Ra7#
        • 2.Rc7#
        • 2.Rde7#
        • 2.Rf7#
        • 2.Rg7#
        • 2.Rh7#
      • 1...Kc4!
    • 1.Rf5?
      • 1...Ka4
        • 2.Rd3#
      • 1...Ka6
        • 2.Ra7#
      • 1...Kc6
        • 2.Ra7#
        • 2.Rc7#
        • 2.Re7#
        • 2.Rdf7#
        • 2.Rg7#
        • 2.Rh7#
      • 1...Kc4!
    • 1.Rg5?
      • 1...Ka4
        • 2.Rd3#
      • 1...Ka6
        • 2.Ra7#
      • 1...Kc6
        • 2.Ra7#
        • 2.Rc7#
        • 2.Re7#
        • 2.Rf7#
        • 2.Rdg7#
        • 2.Rh7#
      • 1...Kc4!
    • 1.Rh5?
      • 1...Ka4
        • 2.Rd3#
      • 1...Ka6
        • 2.Ra7#
      • 1...Kc6
        • 2.Ra7#
        • 2.Rc7#
        • 2.Re7#
        • 2.Rf7#
        • 2.Rg7#
        • 2.Rdh7#
      • 1...Kc4!
    • 1.R7d6+?
      • 1...Kc4
        • 2.Rd4#
      • 1...Ka6!
    • 1.Rb7+?
      • 1...Ka6
        • 2.Ra7#
      • 1...Kc4!
    • 1.Rc7+?
      • 1...Ka6
        • 2.Ra7#
      • 1...Kc4!
    • 1.Re7+?
      • 1...Ka6
        • 2.Ra7#
      • 1...Kc4!
    • 1.Rf7+?
      • 1...Ka6
        • 2.Ra7#
      • 1...Kc4!
    • 1.Rg7+?
      • 1...Ka6
        • 2.Ra7#
      • 1...Kc4!
    • 1.Rh7+?
      • 1...Ka6
        • 2.Ra7#
      • 1...Kc4!
    • 1.Rd8+?
      • 1...Kc4
        • 2.Rd4#
      • 1...Ka6!
    • 1.c6+?
      • 1...Kc4
        • 2.Rc5#
      • 1...Ka6
        • 2.Ra7#
      • 1...Kxc6
        • 2.Rc5#
        • 2.b5#
      • 1...Ka4!
  • Keys
    • 1.Rd1!
      • 1...Ka4
        • 2.R7d3#
      • 1...Kc4
        • 2.R7d4#
      • 1...Ka6
        • 2.Ra7#
      • 1...Kc6
        • 2.Ra7#
        • 2.Rc7#
        • 2.Re7#
        • 2.Rf7#
        • 2.Rg7#
        • 2.Rh7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 0
  • Sets
    • K(c);S_FLIGHT::R1(H)
  • Tries
    • Try
      • K(A);S_FLIGHT
      • Threat
        • B(I)+R(H)
      • Vars
        • K(c);S_FLIGHT::R1(H)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(F);
      • Vars
        • K(c);S_FLIGHT::B(I)+R(H)
        • K(c);S_FLIGHT::R1(H)
      • Refutation
        • P(a);XR(F)
    • Try
      • R(F);
      • Vars
        • K(c);S_FLIGHT::R1(H)
      • Refutation
        • P(b);CHECK,XR(F)
    • Try
      • R(F);
      • Threat
        • B(I)+R(H)
      • Vars
        • K(c);S_FLIGHT::R1(H)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(F);
      • Vars
        • K(c);S_FLIGHT::B(I)+R(H)
        • K(c);S_FLIGHT::R1(H)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(F);
      • Vars
        • K(c);S_FLIGHT::B(I)+R(H)
        • K(c);S_FLIGHT::R1(H)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(F);
      • Vars
        • K(c);S_FLIGHT::B(I)+R(H)
        • K(c);S_FLIGHT::R1(H)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(F);
      • Vars
        • K(c);S_FLIGHT::B(I)+R(H)
        • K(c);S_FLIGHT::R1(H)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(H);CHECK
      • Vars
        • K(c);S_FLIGHT::R1(F)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(H);CHECK
      • Vars
        • K(c);S_FLIGHT::R1(H)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(H);CHECK
      • Vars
        • K(c);S_FLIGHT::R1(H)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(H);CHECK
      • Vars
        • K(c);S_FLIGHT::R1(H)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(H);CHECK
      • Vars
        • K(c);S_FLIGHT::R1(H)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(H);CHECK
      • Vars
        • K(c);S_FLIGHT::R1(H)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(H);CHECK
      • Vars
        • K(c);S_FLIGHT::R1(H)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • R(H);CHECK
      • Vars
        • K(c);S_FLIGHT::R1(F)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • P(E);CHECK
      • Vars
        • K(c);S_FLIGHT::R1(F)
        • K(c);S_FLIGHT::R1(H)
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • R(F);
    • Vars
      • K(c);S_FLIGHT::B(I)+R(H)
      • K(c);S_FLIGHT::R1(H)
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