MESON Chess Problem Database

Problem Display
PID: 68456 (8/r2p3R/1r2kNp1/4B1R1/8/b2Q3K/bp5P/8 w - - 0 1)

Tuhan-Baranowski, Leon

3rd HM., Die Schwalbe, 1952

8/r2p3R/1r2kNp1/4B1R1/8/b2Q3K/bp5P/8

#2

7 + 8

23 Die Schwalbe 2006

SOLUTION

  • SOUND
  • Sets
    • 1...Rb4
      • 2.Qd6#
    • 1...Ra4
      • 2.Qxd7#
    • 1...Ra5
      • 2.Qxd7#
    • 1...Ra6
      • 2.Qxd7#
    • 1...Ra8
      • 2.Qxd7#
    • 1...Bb1
      • 2.Qd5#
    • 1...Bd5
      • 2.Qxd5#
  • Tries
    • 1.Sh5?
      • threat
        • 2.Sf4#
      • 1...Rb4
        • 2.Qd6#
      • 1...Ra4
        • 2.Qxd7#
      • 1...gxh5!
    • 1.Sxd7?
      • threat
        • 2.Rxg6#
      • 1...Rxd7
        • 2.Qxd7#
      • 1...Be7!
    • 1.Qc4+?
      • 1...d5
        • 2.Qg4#
      • 1...Bxc4!
    • 1.Qxg6?
      • threat
        • 2.Qf5#
        • 2.Qf7#
        • 2.Qg8#
      • 1...b1Q
        • 2.Qf7#
        • 2.Qg8#
      • 1...b1B
        • 2.Qf7#
        • 2.Qg8#
      • 1...Rb8
        • 2.Qf5#
        • 2.Qf7#
      • 1...Ra8
        • 2.Qf5#
        • 2.Qf7#
      • 1...Bb1
        • 2.Qf7#
        • 2.Qg8#
      • 1...d5
        • 2.Se4#
        • 2.Sg4#
        • 2.Sh5#
        • 2.Sd7#
        • 2.Se8#
        • 2.Sg8#
        • 2.Qf5#
      • 1...d6
        • 2.Qf5#
      • 1...Rb3+!
  • Keys
    • 1.Sd5!
      • threat
        • 2.Sf4#
      • 1...Bxd5
        • 2.Qxg6#
      • 1...Rb4
        • 2.Re7#
      • 1...Ra4
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 0
    • REMOVED MATES = 4
  • Sets
    • R(d);N_GUARD,S_CUTB(c)::QAR1(B)
    • R(g);N_GUARD::QAB1(B),XP(h)
    • B(a);N_GUARD::QAB1(B)
    • B(a);N_GUARD::QAB1(B),XB(a)
  • Tries
    • Try
      • S(F);
      • Threat
        • S(F)
      • Vars
        • R(d);N_GUARD,S_CUTB(c)::QAR1(B)
        • R(g);N_GUARD::QAB1(B),XP(h)
      • Refutation
        • P(f);XS(F)
    • Try
      • S(F);XP(h)
      • Threat
        • R(E),XP(f)
      • Vars
        • R(g);OGATE,XS(F)::QAB1(B),XR(g)
      • Refutation
        • B(c);
    • Try
      • Q(B);CHECK
      • Vars
        • P(h);P_SPINP(h)::QAB(B)
      • Refutation
        • B(a);XQ(B)
    • Try
      • Q(B);XP(f)
      • Threat
        • DUALS(3)
      • Vars
        • P(h);::QAB1(B)
      • Refutation
        • R(d);CHECK
  • Actual
    • S(F);
    • Threat
      • S(F)
    • Vars
      • B(a);SBLOCK,XS(F)::QAR2(B),XP(f)
      • R(d);S_CUTB(c)::R1(G)
      • R(g);N_GUARD::S(F)
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