MESON Chess Problem Database

Problem Display
PID: 175524 (8/1Q6/3p1p2/3R1P2/1K2kP2/1n6/2N3P1/8 w - - 0 1)

Zimmermann, Stepan

Source?, 1900

8/1Q6/3p1p2/3R1P2/1K2kP2/1n6/2N3P1/8

#2

7 + 4

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Qc8?
      • 1...Kxd5
        • 2.Qb7#
        • 2.Qc4#
        • 2.Qa8#
      • 1...Sd4
        • 2.Rxd4#
      • 1...Sa1
        • 2.Rd4#
        • 2.Qc4#
      • 1...Sc1
        • 2.Rd4#
        • 2.Qc4#
      • 1...Sd2
        • 2.Rd4#
      • 1...Sa5
        • 2.Rd4#
      • 1...Sc5
        • 2.Rd4#
      • 1...Kxf4!
    • 1.Qb5?
      • 1...Sc5
        • 2.Qc4#
      • 1...Sa1
        • 2.Rd4#
        • 2.Qc4#
      • 1...Sc1
        • 2.Rd4#
        • 2.Qc4#
      • 1...Sd2
        • 2.Rd4#
      • 1...Sd4
        • 2.Rxd4#
      • 1...Sa5
        • 2.Rd4#
      • 1...Kxf4!
    • 1.Qd7?
      • 1...Kxd5
        • 2.Qb7#
      • 1...Sd4
        • 2.Rxd4#
      • 1...Sc5
        • 2.Rd4#
      • 1...Sa1
        • 2.Rd4#
      • 1...Sc1
        • 2.Rd4#
      • 1...Sd2
        • 2.Rd4#
      • 1...Sa5
        • 2.Rd4#
      • 1...Kxf4!
    • 1.Qe7+?
      • 1...Kxd5
        • 2.Qb7#
      • 1...Kxf4!
  • Keys
    • 1.Qh7!
      • 1...Kxf4
        • 2.Qh4#
      • 1...Kxd5
        • 2.Qb7#
      • 1...Sd4
        • 2.Rxd4#
      • 1...Sc5
        • 2.Rd4#
      • 1...Sa1
        • 2.Rd4#
      • 1...Sc1
        • 2.Rd4#
      • 1...Sd2
        • 2.Rd4#
      • 1...Sa5
        • 2.Rd4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • Q(G);
      • Vars
        • S(a);N_GUARD::R1(E),XS(a)
        • S(a);N_GUARD::R1(E)
      • Refutation
        • K(b);P-FLIGHT,XP(D)
    • Try
      • Q(G);
      • Vars
        • S(a);N_GUARD::QAR2(G)
        • S(a);N_GUARD::R1(E)
        • S(a);N_GUARD::R1(E),XS(a)
      • Refutation
        • K(b);P-FLIGHT,XP(D)
    • Try
      • Q(G);
      • Vars
        • K(b);OGATEB,P_SPINP(c),S_FLIGHT,XR(E)::QAB(G)
        • S(a);N_GUARD::R1(E),XS(a)
        • S(a);N_GUARD::R1(E)
      • Refutation
        • K(b);P-FLIGHT,XP(D)
    • Try
      • Q(G);CHECK
      • Vars
        • K(b);OGATEB,S_FLIGHT,XR(E)::QAB(G)
      • Refutation
        • K(b);P-FLIGHT,XP(D)
  • Actual
    • Q(G);
    • Vars
      • K(b);OGATEB,P-FLIGHT,XP(D)::QAR2(G)
      • K(b);OGATEB,S_FLIGHT,XR(E)::QAB(G)
      • S(a);N_GUARD::R1(E),XS(a)
      • S(a);N_GUARD::R1(E)
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