MESON Chess Problem Database

Problem Display
PID: 227932 (8/8/7R/8/3B4/3r4/1Q3p2/3k1K2 w - - 0 1)

Lipton, Michael

Deutsche Schachzeitung, 1970

8/8/7R/8/3B4/3r4/1Q3p2/3k1K2

#2

4 + 3

15148 Sadier Collection 2020

SOLUTION

  • SOUND
  • Sets
    • 1...Rd2
      • 2.Qb1#
  • Tries
    • 1.Be3?
      • threat
        • 2.Qc1#
        • 2.Qb1#
        • 2.Qe2#
      • 1...Rd2
        • 2.Qb1#
        • 2.Qxd2#
      • 1...Rb3
        • 2.Qc1#
        • 2.Qd2#
        • 2.Qe2#
        • 2.Qxb3#
      • 1...Rc3
        • 2.Qd2#
        • 2.Qe2#
      • 1...Rxe3!
    • 1.Rc6?
      • threat
        • 2.Rc1#
        • 2.Qc1#
        • 2.Qc2#
        • 2.Qe2#
      • 1...Rd2
        • 2.Rc1#
        • 2.Qa1#
        • 2.Qc1#
        • 2.Qb1#
      • 1...Re3
        • 2.Rc1#
        • 2.Qc1#
        • 2.Qc2#
      • 1...Rc3!
  • Keys
    • 1.Rd6!
      • 1...Rxd4
        • 2.Rxd4#
      • 1...Ra3
        • 2.Bc3#
      • 1...Rd2
        • 2.Qb1#
      • 1...Rb3
        • 2.Bc3#
      • 1...Rc3
        • 2.Bxc3#
      • 1...Re3
        • 2.Bxe3#
      • 1...Rf3
        • 2.Be3#
      • 1...Rg3
        • 2.Be3#
      • 1...Rh3
        • 2.Be3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 8
    • REMOVED MATES = 0
  • Sets
    • R(c);SBLOCK::QAR2(B)
  • Tries
    • Try
      • B(C);
      • Threat
        • DUALS(3)
      • Refutation
        • R(c);XB(C)
    • Try
      • R(D);
      • Threat
        • DUALS(4)
      • Refutation
        • R(c);
  • Actual
    • R(D);
    • Vars
      • R(c);OGATE,P_SPINR(c),XB(C)::R(D),XR(c)
      • R(c);OGATEB::R(D)+B(C)
      • R(c);SBLOCK::QAR2(B)
      • R(c);OGATEB::R(D)+B(C),XR(c)
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