MESON Chess Problem Database

Problem Display
PID: 234566 (1R6/2Bk4/3P3N/8/p2R4/Q7/6K1/8 w - - 0 1)

Speckmann, Werner

Schach, 1966

1R6/2Bk4/3P3N/8/p2R4/Q7/6K1/8

#2

7 + 2

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Tries
    • 1.Sg4?
      • 1...Kc6
        • 2.Se5#
      • 1...Ke6!
    • 1.Sf7?
      • 1...Kc6
        • 2.Se5#
      • 1...Ke6!
    • 1.Bb6?
      • 1...Kc6
        • 2.Qxa4#
      • 1...Ke6!
    • 1.Re8?
      • threat
        • 2.Qxa4#
      • 1...Kxe8
        • 2.d7#
      • 1...Kc6!
    • 1.Qc5?
      • 1...Ke6
        • 2.Qf5#
      • 1...a3!
    • 1.Qd3?
      • 1...Kc6
        • 2.Qb5#
      • 1...Ke6
        • 2.Qf5#
      • 1...a3!
    • 1.Qf3?
      • 1...Ke6
        • 2.Qf5#
      • 1...a3!
  • Keys
    • 1.Rb6!
      • 1...Ke6
        • 2.d7#
      • 1...Kc8
        • 2.Qh3#
      • 1...Ke8
        • 2.d7#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(E);
      • Vars
        • K(b);S_FLIGHT::S(E)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • S(E);
      • Vars
        • K(b);S_FLIGHT::S(E)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • B(F);
      • Vars
        • K(b);S_FLIGHT::QAB(B),XP(a)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • R(G);
      • Threat
        • QAB(B),XP(a)
      • Vars
        • K(b);OGATE,S_FLIGHT,XR(G)::P(D)
      • Refutation
        • K(b);S_FLIGHT
    • Try
      • Q(B);
      • Vars
        • K(b);S_FLIGHT::QAB1(B)
      • Refutation
        • P(a);
    • Try
      • Q(B);
      • Vars
        • K(b);S_FLIGHT::QAB1(B)
      • Refutation
        • P(a);
    • Try
      • Q(B);
      • Vars
        • K(b);S_FLIGHT::QAB1(B)
      • Refutation
        • P(a);
  • Actual
    • R(G);
    • Vars
      • K(b);OGATE,S_FLIGHT::R(G)+P(D)
      • K(b);S_FLIGHT::QAB(B)
      • K(b);OGATE,S_FLIGHT::P(D)
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