MESON Chess Problem Database

Problem Display
PID: 10995 (rk2K3/NPR5/8/8/8/8/8/4Q3 w - - 0 1)

von Holzhausen, Walther Freiherr

Akademische Schachblatter, 1901

rk2K3/NPR5/8/8/8/8/8/4Q3

#2

5 + 2

3713 Snap 2007

SOLUTION

  • SOUND
  • Tries
    • 1.Kd7?
      • threat
        • 2.Sc6#
      • 1...Rxa7
        • 2.Qe8#
      • 1...Kxa7!
    • 1.Rd7?
      • threat
        • 2.Sc6#
      • 1...Rxa7
        • 2.Qg3#
        • 2.Qe5#
      • 1...Kxa7+!
    • 1.Re7?
      • threat
        • 2.Sc6#
      • 1...Rxa7
        • 2.Qg3#
        • 2.Qe5#
      • 1...Kxa7+!
    • 1.Rf7?
      • threat
        • 2.Sc6#
      • 1...Rxa7
        • 2.Qg3#
        • 2.Qe5#
      • 1...Kxa7+!
    • 1.Rg7?
      • threat
        • 2.Sc6#
      • 1...Rxa7
        • 2.Qg3#
        • 2.Qe5#
      • 1...Kxa7+!
    • 1.Rh7?
      • threat
        • 2.Sc6#
      • 1...Rxa7
        • 2.Qg3#
        • 2.Qe5#
      • 1...Kxa7+!
    • 1.Qg3?
      • threat
        • 2.Sc6#
      • 1...Rxa7
        • 2.Rd7#
        • 2.Re7#
        • 2.Rf7#
        • 2.Rg7#
        • 2.Rh7#
      • 1...Kxa7+!
    • 1.Qb1?
      • 1...Kxa7+
        • 2.b8S#
      • 1...Rxa7
        • 2.Rc8#
      • 1...Kxc7+!
    • 1.Qe5?
      • threat
        • 2.Sc6#
      • 1...Rxa7
        • 2.Rd7#
        • 2.Re7#
        • 2.Rf7#
        • 2.Rg7#
        • 2.Rh7#
      • 1...Kxa7+!
    • 1.Qe7?
      • threat
        • 2.Sc6#
      • 1...Rxa7
        • 2.Rc8#
        • 2.Qd8#
      • 1...Kxa7+!
  • Keys
    • 1.Qb4!
      • 1...Kxa7+
        • 2.b8S#
      • 1...Kxc7+
        • 2.bxa8S#
      • 1...Rxa7
        • 2.Rc8#

This anticipates 46961(1929)

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • K(E);S_FLIGHT
      • Threat
        • S(B)
      • Vars
        • R(a);SBLOCK,XS(B)::QAR(A)
      • Refutation
        • K(b);S_FLIGHT,XS(B)
    • Try
      • R(D);
      • Threat
        • S(B)
      • Refutation
        • K(b);CHECK,S_FLIGHT,XS(B)
    • Try
      • R(D);
      • Threat
        • S(B)
      • Refutation
        • K(b);CHECK,S_FLIGHT,XS(B)
    • Try
      • R(D);
      • Threat
        • S(B)
      • Refutation
        • K(b);CHECK,S_FLIGHT,XS(B)
    • Try
      • R(D);
      • Threat
        • S(B)
      • Refutation
        • K(b);CHECK,S_FLIGHT,XS(B)
    • Try
      • R(D);
      • Threat
        • S(B)
      • Refutation
        • K(b);CHECK,S_FLIGHT,XS(B)
    • Try
      • Q(A);
      • Threat
        • S(B)
      • Refutation
        • K(b);CHECK,S_FLIGHT,XS(B)
    • Try
      • Q(A);
      • Vars
        • K(b);CHECK,OGATE,S_FLIGHT,XS(B)::P=S
        • R(a);SBLOCK,XS(B)::R1(D)
      • Refutation
        • K(b);CHECK,S_FLIGHT,XR(D)
    • Try
      • Q(A);
      • Threat
        • S(B)
      • Refutation
        • K(b);CHECK,S_FLIGHT,XS(B)
    • Try
      • Q(A);
      • Threat
        • S(B)
      • Refutation
        • K(b);CHECK,S_FLIGHT,XS(B)
  • Actual
    • Q(A);
    • Vars
      • K(b);CHECK,OGATE,S_FLIGHT,XS(B)::P=S
      • K(b);CHECK,S_FLIGHT,XR(D)::PXR(a)=S
      • R(a);SBLOCK,XS(B)::R1(D)
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