MESON Chess Problem Database

Problem Display
PID: 102433 (4R3/8/8/1K2pp2/3pkNp1/1PP1q3/2P1pQ2/1BB1N3 w - - 0 1)

Millour, Rene-Jean

Europe Echecs, 1965

4R3/8/8/1K2pp2/3pkNp1/1PP1q3/2P1pQ2/1BB1N3

#2

10 + 7

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxc1
      • 2.Qxd4#
    • 1...Qxf4
      • 2.Qxd4#
    • 1...Qd3+
      • 2.cxd3#
    • 1...Qf3
      • 2.Qxd4#
    • 1...Qg3
      • 2.Qxd4#
    • 1...Qh3
      • 2.Qxd4#
    • 1...dxc3
      • 2.Qxe3#
    • 1...d3
      • 2.Qxe3#
  • Keys
    • 1.cxd4!
      • threat
        • 2.Qxe3#
      • 1...Qxb3+
        • 2.cxb3#
      • 1...Qd3+
        • 2.cxd3#
      • 1...Kxd4
        • 2.Qxe3#
      • 1...Qxc1
        • 2.Rxe5#
      • 1...Qxf2
        • 2.c3#
      • 1...Qxd4
        • 2.Qg2#
      • 1...Qxf4
        • 2.c4#
      • 1...Qd2
        • 2.Rxe5#
      • 1...Qc3
        • 2.Rxe5#
      • 1...Qf3
        • 2.Rxe5#
      • 1...Qg3
        • 2.Rxe5#
      • 1...Qh3
        • 2.Rxe5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 5
    • ADDED MATES = 6
    • REMOVED MATES = 2
  • Sets
    • Q(b);OGATE,XB(B)::QAR1(E),XP(c)
    • Q(b);OGATE,XS(H)::QAR1(E),XP(c)
    • Q(b);CHECK,OGATE::P(D),XQ(b)
    • Q(b);OGATE::QAR1(E),XP(c)
    • P(c);N_GUARD,XP(G)::QAR1(E),XQ(b)
    • P(c);N_GUARD::QAR1(E),XQ(b)
  • Actual
    • P(G);XP(c)
    • Threat
      • QAR1(E),XQ(b)
    • Vars
      • Q(b);CHECK,OGATE,XP(F)::B(A)+P(D),XQ(b)
      • Q(b);CHECK,OGATE::P(D),XQ(b)
      • K(d);N_SPINP(f),P-FLIGHT,P_SPINQ(b),XP(G)::QAB1(E),XQ(b)
      • Q(b);XB(B)::R1(J),XP(f)
      • Q(b);N_GUARD,XQ(E)::B(A)+P(D)
      • Q(b);N_GUARD,SBLOCK,XP(G)::QAB(E)
      • Q(b);N_GUARD,XS(H)::B(A)+P(D)
      • Q(b);::R1(J),XP(f)
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