MESON Chess Problem Database

Problem Display
PID: 222780 (3Q4/8/8/R4P2/4pk2/1K5p/1B5N/1B6 w - - 0 1)

Rosenbaum, Aleksandr

Vsemirnaya Illustrantiya, 1883

3Q4/8/8/R4P2/4pk2/1K5p/1B5N/1B6

#2

7 + 3

236 The Field 1883
6490 yacpdb 2020

SOLUTION

  • SOUND
  • Sets
    • 1...e3
      • 2.Be5#
      • 2.Qh4#
  • Tries
    • 1.Kc2?
      • 1...Ke3
        • 2.Qd2#
      • 1...e3
        • 2.Qh4#
      • 1...Kg3!
    • 1.Kc3?
      • 1...Ke3
        • 2.Qd2#
      • 1...e3
        • 2.Qh4#
      • 1...Kg3!
    • 1.Bc1+?
      • 1...e3
        • 2.Qh4#
      • 1...Kg3!
    • 1.Bc3?
      • 1...Ke3
        • 2.Qd2#
      • 1...e3
        • 2.Be5#
        • 2.Qh4#
      • 1...Kg3!
    • 1.Be5+?
      • 1...Kxf5
        • 2.Qf6#
      • 1...Ke3!
    • 1.Qg8?
      • 1...e3
        • 2.Be5#
        • 2.Ra4#
        • 2.Qg4#
      • 1...Ke3!
  • Keys
    • 1.Ra2!
      • 1...Ke3
        • 2.Bc1#
      • 1...Kg3
        • 2.Be5#
      • 1...Kxf5
        • 2.Qf6#
      • 1...e3
        • 2.Qh4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(D);S_FLIGHT
      • Vars
        • K(c);S_FLIGHT::QAB1(G)
        • P(b);SBLOCK::QAR2(G)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • K(D);P-FLIGHT
      • Vars
        • K(c);S_FLIGHT::QAB1(G)
        • P(b);SBLOCK::QAR2(G)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • B(B);CHECK
      • Vars
        • P(b);P_SPINP(b)::QAR2(G)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • B(B);
      • Vars
        • K(c);S_FLIGHT::QAB1(G)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • B(B);CHECK
      • Vars
        • K(c);P-FLIGHT,P_SPINP(b),XP(F)::QAR1(G)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(G);
      • Refutation
        • K(c);S_FLIGHT
  • Actual
    • R(E);
    • Vars
      • K(c);S_FLIGHT::B(B)
      • K(c);OGATEB,P-FLIGHT,P_SPINP(b),XP(F)::QAR1(G)
      • P(b);SBLOCK::QAR2(G)
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