MESON Chess Problem Database

Problem Display
PID: 15688 (6Q1/8/8/8/8/nK6/8/1kq4R w - - 0 1)

Spare, Carl-Erik

Comm., Buletin Problemistic TT, 1987-1989

6Q1/8/8/8/8/nK6/8/1kq4R

#2

3 + 3

4883 Still More Fun with Chess Miniatures 2002

SOLUTION

  • SOUND
  • Sets
    • 1...Qd1+
      • 2.Rxd1#
    • 1...Qe1
      • 2.Rxe1#
    • 1...Qf1
      • 2.Rxf1#
    • 1...Qg1
      • 2.Rxg1#
      • 2.Qxg1#
  • Tries
    • 1.Qg1?
      • threat
        • 2.Qxc1#
      • 1...Qd1+
        • 2.Qxd1#
      • 1...Qxg1
        • 2.Rxg1#
      • 1...Qe1
        • 2.Qxe1#
      • 1...Qf1
        • 2.Qxf1#
      • 1...Ka1!
    • 1.Qg2?
      • threat
        • 2.Qa2#
        • 2.Qb2#
      • 1...Qd1+
        • 2.Rxd1#
      • 1...Ka1
        • 2.Qa2#
        • 2.Qb2#
      • 1...Qxh1
        • 2.Qxh1#
        • 2.Qb2#
      • 1...Qe1
        • 2.Rxe1#
        • 2.Qb2#
      • 1...Qf1
        • 2.Rxf1#
        • 2.Qxf1#
        • 2.Qb2#
      • 1...Qg1
        • 2.Rxg1#
        • 2.Qxg1#
        • 2.Qb2#
      • 1...Sc4
        • 2.Qa2#
      • 1...Sc2!
    • 1.Qg7?
      • threat
        • 2.Qb2#
      • 1...Qd1+
        • 2.Rxd1#
      • 1...Sc4!
    • 1.Qh8?
      • threat
        • 2.Qb2#
      • 1...Qd1+
        • 2.Rxd1#
      • 1...Sc4!
  • Keys
    • 1.Qa8!
      • 1...Qd1+
        • 2.Rxd1#
      • 1...Ka1
        • 2.Rxc1#
      • 1...Qxh1
        • 2.Qxh1#
      • 1...Qe1
        • 2.Rxe1#
      • 1...Qf1
        • 2.Rxf1#
      • 1...Qg1
        • 2.Rxg1#
      • 1...Sc2
        • 2.Qa2#
      • 1...Sc4
        • 2.Qa2#
      • 1...Sb5
        • 2.Qa2#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • Q(b);CHECK,OGATEB::R(A),XQ(b)
    • Q(b);OGATEB::R(A),XQ(b)
  • Tries
    • Try
      • Q(C);
      • Threat
        • QAR1(C),XQ(b)
      • Vars
        • Q(b);CHECK,OGATEB::QAR2(C),XQ(b)
        • Q(b);OGATE,XQ(C)::R(A),XQ(b)
        • Q(b);OGATEB::QAR(C),XQ(b)
      • Refutation
        • K(a);P-FLIGHT
    • Try
      • Q(C);
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);CHECK,OGATEB::R(A),XQ(b)
        • S(c);::QAB1(C)
      • Refutation
        • S(c);
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Vars
        • Q(b);CHECK,OGATEB::R(A),XQ(b)
      • Refutation
        • S(c);
    • Try
      • Q(C);
      • Threat
        • QAR1(C)
      • Vars
        • Q(b);CHECK,OGATEB::R(A),XQ(b)
      • Refutation
        • S(c);
  • Actual
    • Q(C);
    • Vars
      • Q(b);CHECK,OGATEB::R(A),XQ(b)
      • K(a);P-FLIGHT,P_SPINS(c)::R(A),XQ(b)
      • Q(b);N_SPINQ(b),OGATE,XR(A)::QAR(C),XQ(b)
      • Q(b);OGATEB::R(A),XQ(b)
      • S(c);OGATE::QAB1(C)
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