MESON Chess Problem Database

Problem Display
PID: 137092 (8/K2p2Br/p7/r4pp1/1Q1NBN2/1Pp1kPp1/1q6/3R1R2 w - - 0 1)

Robert, Philippe

StrateGems, 2010

8/K2p2Br/p7/r4pp1/1Q1NBN2/1Pp1kPp1/1q6/3R1R2

#2

10 + 10

SOLUTION

  • SOUND
  • Sets
    • 1...Qa1
      • 2.Sg2#
    • 1...Qc1
      • 2.Sg2#
    • 1...Qa3
      • 2.Sg2#
    • 1...Qb1
      • 2.Sg2#
    • 1...Qg2
      • 2.Sxg2#
    • 1...Qxb3
      • 2.Sg2#
    • 1...Ra1
      • 2.Sd5#
    • 1...Ra2
      • 2.Sd5#
    • 1...Ra3
      • 2.Sd5#
    • 1...Ra4
      • 2.Sd5#
    • 1...Rd5
      • 2.Sxd5#
    • 1...c2
      • 2.Sg2#
      • 2.Qd2#
    • 1...gxf4
      • 2.Rd3#
  • Tries
    • 1.Sc2+?
      • 1...Kxf4
        • 2.Bd3#
        • 2.Bd5#
        • 2.Bc6#
        • 2.Bb7#
        • 2.Ba8#
      • 1...Qxc2!
    • 1.Sxf5+?
      • 1...Kxf4
        • 2.Bb1#
        • 2.Bc2#
        • 2.Bd3#
      • 1...Rxf5!
    • 1.Bc2?
      • threat
        • 2.Sg2#
      • 1...Kxf4
        • 2.Sxf5#
      • 1...Qxc2
        • 2.Sxc2#
      • 1...gxf4
        • 2.Rd3#
      • 1...g2
        • 2.Sxg2#
      • 1...Rh2!
    • 1.Qxc3+?
      • 1...Qxc3
        • 2.Sg2#
      • 1...Kxf4!
    • 1.Qxa5?
      • threat
        • 2.Sd5#
      • 1...Qxb3
        • 2.Sg2#
      • 1...gxf4
        • 2.Rd3#
      • 1...d5
        • 2.Sxd5#
      • 1...Kxf4!
  • Keys
    • 1.Bd5!
      • threat
        • 2.Sxf5#
      • 1...Kxf4
        • 2.Sc2#
      • 1...Rxd5
        • 2.Sxd5#
      • 1...gxf4
        • 2.Qe7#
      • 1...Qb1
        • 2.Sg2#
      • 1...Qc2
        • 2.Sxc2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 9
  • Sets
    • Q(a);N_GUARD::S(H)
    • Q(a);N_GUARD::S(H),XQ(a)
    • Q(a);N_GUARD,XP(C)::S(H)
    • R(e);N_GUARD::S(H)
    • R(e);N_GUARD::S(H),XR(e)
    • P(g);SBLOCK,XS(H)::R1(A)
  • Tries
    • Try
      • S(F);CHECK
      • Refutation
        • Q(a);XS(F)
    • Try
      • S(F);CHECK,XP(f)
      • Refutation
        • R(e);XS(F)
    • Try
      • B(G);
      • Threat
        • S(H)
      • Vars
        • K(c);S_FLIGHT,XS(H)::QAR(E)+S(F),XP(f)
        • Q(a);XB(G)::S(F),XQ(a)
        • P(g);SBLOCK,XS(H)::R1(A)
        • P(d);::S(H),XP(d)
      • Refutation
        • R(j);
    • Try
      • Q(E);CHECK,XP(b)
      • Vars
        • Q(a);XQ(E)::S(H)
      • Refutation
        • K(c);S_FLIGHT,XS(H)
    • Try
      • Q(E);XR(e)
      • Threat
        • S(H)
      • Vars
        • Q(a);N_GUARD,XP(C)::S(H)
        • P(g);SBLOCK,XS(H)::R1(A)
        • P(i);P_PINB(J)::S(H),XP(i)
      • Refutation
        • K(c);S_FLIGHT,XS(H)
  • Actual
    • B(G);
    • Threat
      • S(F),XP(f)
    • Vars
      • K(c);S_FLIGHT,XS(H)::QAR(E)+S(F)
      • R(e);XB(G)::S(H),XR(e)
      • P(g);SBLOCK,XS(H)::QAR(E)
      • Q(a);N_GUARD::S(H)
      • Q(a);N_GUARD::S(F),XQ(a)
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