MESON Chess Problem Database

Problem Display
PID: 176324 (7B/1q2pK2/2p1N3/2PkPp2/3N1R2/3Ppr2/8/2r5 w - - 0 1)

Popp, Willy

Schach-Echo, 1972

7B/1q2pK2/2p1N3/2PkPp2/3N1R2/3Ppr2/8/2r5

#2

8 + 8

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Sc2?
      • threat
        • 2.Rd4#
      • 1...Rxf4
        • 2.Sxe3#
      • 1...Qb4
        • 2.Sxb4#
      • 1...Qb2!
    • 1.Sxf5?
      • threat
        • 2.Rd4#
      • 1...Qb2
        • 2.Sxe7#
      • 1...Qb4
        • 2.Sxe7#
      • 1...Rc4
        • 2.dxc4#
      • 1...Rxf4!
  • Keys
    • 1.Sb3!
      • threat
        • 2.Rd4#
      • 1...Rxf4
        • 2.Sxf4#
      • 1...Qb4
        • 2.Sc7#
      • 1...Rc4
        • 2.dxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(B);
      • Threat
        • R1(C)
      • Vars
        • R(c);N_GUARD,XR(C)::S(B),XP(b)
        • Q(g);N_GUARD::S(B),XQ(g)
      • Refutation
        • Q(g);
    • Try
      • S(B);XP(e)
      • Threat
        • R1(C)
      • Vars
        • Q(g);N_GUARD::S(B),XP(h)
        • R(a);OGATE::P(A),XR(a)
      • Refutation
        • R(c);P_PINS(B),XR(C)
  • Actual
    • S(B);
    • Threat
      • R1(C)
    • Vars
      • R(c);XR(C)::S(F),XR(c)
      • Q(g);N_GUARD::S(F)
      • R(a);OGATE::P(A),XR(a)
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