MESON Chess Problem Database

Problem Display
PID: 29790 (8/8/8/3Q4/8/R6p/7k/1KR2n2 w - - 0 1)

Kondratiev, Pavel E

Kudesnik, 1991

8/8/8/3Q4/8/R6p/7k/1KR2n2

#2

4 + 3

2838 Fun with Chess Miniatures 1996

SOLUTION

  • SOUND
  • Sets
    • 1...Sd2+
      • 2.Qxd2#
  • Tries
    • 1.Qa2+?
      • 1...Kh1
        • 2.Rxf1#
      • 1...Sd2+
        • 2.Qxd2#
      • 1...Kg1!
    • 1.Qg8?
      • 1...Kh1
        • 2.Rxh3#
      • 1...Se3
        • 2.Qg1#
      • 1...Sg3
        • 2.Qxg3#
      • 1...Sd2+!
  • Keys
    • 1.Qg5!
      • 1...Sd2+
        • 2.Qxd2#
      • 1...Kh1
        • 2.Rxh3#
      • 1...Se3
        • 2.Qg1#
      • 1...Sg3
        • 2.Qxg3#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
    • S(a);CHECK,N_GUARD::QAR(D),XS(a)
  • Tries
    • Try
      • Q(D);CHECK
      • Vars
        • K(b);P-FLIGHT,P_SPINS(a)::R(B),XS(a)
        • S(a);CHECK,N_GUARD,P_SPINS(a)::QAR(D),XS(a)
      • Refutation
        • K(b);P_SPINS(a),S_FLIGHT
    • Try
      • Q(D);
      • Vars
        • K(b);P-FLIGHT,P_SPINS(a)::R(C),XP(c)
        • S(a);::QAB1(D)
        • S(a);N_GUARD::QAB1(D),XS(a)
      • Refutation
        • S(a);CHECK
  • Actual
    • Q(D);
    • Vars
      • S(a);CHECK,N_GUARD::QAR(D),XS(a)
      • K(b);P-FLIGHT,P_SPINS(a)::R(C),XP(c)
      • S(a);::QAB1(D)
      • S(a);N_GUARD::QAB1(D),XS(a)
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