MESON Chess Problem Database

Problem Display
PID: 194013 (6B1/8/1np1R3/q1Pk2rp/1np1p1p1/4P3/5P2/R5QK w - - 0 1)

Walter, Hermann Karl

Der Stosstrupp, 1917

6B1/8/1np1R3/q1Pk2rp/1np1p1p1/4P3/5P2/R5QK

#2

8 + 10

6490 yacpdb 2019

SOLUTION

  • SOUND
  • Sets
    • 1...Kxc5
      • 2.Rxa5#
  • Tries
    • 1.Rg6+?
      • 1...Kxc5
        • 2.Rxa5#
      • 1...Ke5!
    • 1.Qd1+?
      • 1...Kxc5
        • 2.Rxa5#
      • 1...Sd3!
    • 1.Qg3?
      • threat
        • 2.Re5#
        • 2.Qd6#
      • 1...Kxc5
        • 2.Rxa5#
      • 1...Qxc5
        • 2.Rd6#
        • 2.Rg6#
      • 1...c3
        • 2.Re5#
      • 1...Re5
        • 2.Rxe5#
        • 2.Qxe5#
      • 1...Sc8
        • 2.Re5#
      • 1...Qxa1+!
  • Keys
    • 1.f4!
      • threat
        • 2.Re5#
      • 1...Kxc5
        • 2.Rxa5#
      • 1...Qxc5
        • 2.Rg6#
      • 1...exf4 ep
        • 2.e4#
      • 1...gxf4 ep
        • 2.Qxg5#
      • 1...Re5
        • 2.Rxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • K(f);OGATEB,P-FLIGHT,XP(F)::R(A),XQ(e)
  • Tries
    • Try
      • R(G);CHECK
      • Vars
        • K(f);P-FLIGHT,XP(F)::R(A),XQ(e)
      • Refutation
        • K(f);P-FLIGHT
    • Try
      • Q(B);CHECK
      • Vars
        • K(f);P-FLIGHT,XP(F)::R(A),XQ(e)
      • Refutation
        • S(a);P_SPINS(a)
    • Try
      • Q(B);
      • Threat
        • DUALS(2)
      • Vars
        • K(f);OGATEB,P-FLIGHT,XP(F)::R(A),XQ(e)
        • P(b);::B(H)+R(G),DCHECK
        • S(i);::B(H)+R(G),DCHECK
      • Refutation
        • Q(e);CHECK,XR(A)
  • Actual
    • P(D);
    • Threat
      • B(H)+R(G),DCHECK
    • Vars
      • K(f);OGATEB,P-FLIGHT,XP(F)::R(A),XQ(e)
      • Q(e);SBLOCK,XP(F)::B(H)+R(G)
      • P(c);EP,OGATE,XP(D)::P(E)
      • P(d);EP,OGATE,XP(D)::QAR(B),XR(g)
      • R(g);::B(H)+R(G),DCHECK,XR(g)
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