MESON Chess Problem Database

Problem Display
PID: 196996 (3R4/7Q/Pp1b1P2/1p1kNpp1/1P6/1K3P2/8/8 w - - 0 1)

Bosshard, F

Schweizerische Schachzeitung, 1919

3R4/7Q/Pp1b1P2/1p1kNpp1/1P6/1K3P2/8/8

#2

8 + 6

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Tries
    • 1.Sc4?
      • threat
        • 2.Rxd6#
      • 1...Kd4
        • 2.Rxd6#
      • 1...Kc6
        • 2.Rxd6#
        • 2.Qb7#
      • 1...Ke6
        • 2.Rxd6#
      • 1...bxc4+!
    • 1.Qxf5?
      • 1...Kd4
        • 2.Qe4#
      • 1...g4!
    • 1.Qc7?
      • threat
        • 2.Qxd6#
      • 1...Kxe5
        • 2.Qxd6#
      • 1...Ke6
        • 2.Qxd6#
      • 1...Kd4!
    • 1.Qd7?
      • threat
        • 2.Qxd6#
      • 1...Kxe5
        • 2.Qxd6#
      • 1...Kd4!
  • Keys
    • 1.Sg4!
      • 1...Kd4
        • 2.Rxd6#
      • 1...Kc6
        • 2.Qb7#
      • 1...Ke6
        • 2.Qg8#
      • 1...fxg4
        • 2.Qe4#
      • 1...f4
        • 2.Qe4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);
      • Threat
        • R1(H),XB(f)
      • Vars
        • K(b);P-FLIGHT::R(H),XB(f)
        • K(b);N_SPINB(f),S_FLIGHT::R1(H),XB(f)
      • Refutation
        • P(a);CHECK,XS(D)
    • Try
      • Q(G);XP(c)
      • Vars
        • K(b);P-FLIGHT::QAR1(G)
      • Refutation
        • P(d);
    • Try
      • Q(G);
      • Threat
        • QAR1(G),XB(f)
      • Vars
        • K(b);P-FLIGHT,XS(D)::QAB1(G),XB(f)
        • K(b);N_SPINB(f),S_FLIGHT::QAR1(G),XB(f)
      • Refutation
        • K(b);P-FLIGHT
    • Try
      • Q(G);
      • Threat
        • QAR1(G),XB(f)
      • Vars
        • K(b);N_SPINB(f),P-FLIGHT,XS(D)::QAB1(G),XB(f)
      • Refutation
        • K(b);P-FLIGHT
  • Actual
    • S(D);
    • Vars
      • K(b);P-FLIGHT::R(H),XB(f)
      • K(b);N_SPINB(f),S_FLIGHT::QAB1(G)
      • K(b);N_SPINB(f),S_FLIGHT::QAB(G)
      • P(c);OGATE,XS(D)::QAB1(G)
      • P(c);OGATE::QAB1(G)
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