MESON Chess Problem Database

Problem Display
PID: 10841 (r3k2r/R7/7p/4K3/8/8/1Q6/8 w qk - 0 1)

Pilipenko, Viktor

Deutsche Schachzeitung, 1969

r3k2r/R7/7p/4K3/8/8/1Q6/8

#2

3 + 4

3295 Einfuhrung in die Welt des Schachproblem 1984
3296 Shakhmatny zadachi miniaturi 1987
136 Problem Observer 2012

SOLUTION

  • SOUND
  • Sets
    • 1...Rb8
      • 2.Qxb8#
    • 1...0-0-0
      • 2.Qb7#
  • Tries
    • 1.Rxa8+?
      • 1...Kd7
        • 2.Qb7#
      • 1...Ke7
        • 2.Qb7#
      • 1...Kf7!
    • 1.Qb5+?
      • 1...Kd8
        • 2.Qd7#
      • 1...Kf8!
    • 1.Qb7?
      • threat
        • 2.Rxa8#
        • 2.Qxa8#
        • 2.Qe7#
      • 1...Kd8
        • 2.Rxa8#
        • 2.Qxa8#
        • 2.Qd7#
      • 1...Kf8
        • 2.Rxa8#
        • 2.Qxa8#
        • 2.Qf7#
      • 1...0-0
        • 2.Qg7#
        • 2.Qh7#
      • 1...Rb8
        • 2.Qe7#
        • 2.Qxb8#
      • 1...Rc8
        • 2.Qxc8#
        • 2.Qe7#
      • 1...Rd8
        • 2.Qe7#
        • 2.Qf7#
      • 1...Rh7
        • 2.Rxa8#
        • 2.Qxa8#
      • 1...Rxa7!
  • Keys
    • 1.Ke6!
      • threat
        • 2.Rxa8#
        • 2.Qxh8#
      • 1...Kd8
        • 2.Qxh8#
      • 1...Kf8
        • 2.Rxa8#
        • 2.Qxh8#
      • 1...0-0
        • 2.Qg7#
      • 1...0-0-0
        • 2.Qb7#
      • 1...Rxa7
        • 2.Qxh8#
        • 2.Qb8#
      • 1...Rb8
        • 2.Qxh8#
        • 2.Qxb8#
      • 1...Rc8
        • 2.Qxh8#
      • 1...Rd8
        • 2.Qxh8#
      • 1...Rh7
        • 2.Rxa8#
      • 1...Rf8
        • 2.Rxa8#
      • 1...Rg8
        • 2.Rxa8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 1
  • Sets
    • R(b);N_GUARD::QAR(A),XR(b)
    • K(c);0-0-0,OGATEB::QAB1(A)
  • Tries
    • Try
      • R(C);CHECK,XR(b)
      • Vars
        • K(c);S_FLIGHT::QAR2(A)
        • K(c);P-FLIGHT::QAR(A)
      • Refutation
        • K(c);S_FLIGHT
    • Try
      • Q(A);CHECK
      • Vars
        • K(c);P-FLIGHT::QAR1(A)
      • Refutation
        • K(c);P-FLIGHT
    • Try
      • Q(A);
      • Threat
        • DUALS(3)
      • Refutation
        • R(b);XR(C)
  • Actual
    • K(B);P-FLIGHT
    • Threat
      • DUALS(2)
    • Vars
      • K(c);P-FLIGHT::QAR(A),XR(d)
      • K(c);0-0,OGATEB::QAR1(A)
      • K(c);0-0-0,OGATEB::QAB1(A)
      • R(b);::QAR(A),XR(d)
      • R(b);SBLOCK::QAR(A),XR(d)
      • R(d);::R(C),XR(b)
      • R(d);SBLOCK::R(C),XR(b)
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