MESON Chess Problem Database

Problem Display
PID: 272476 (2R1K2B/1NbpP3/PpP5/3kNBR1/p7/3p2r1/P7/1Q6 w - - 0 1)

Robert, Philippe

diagrammes, 1977

2R1K2B/1NbpP3/PpP5/3kNBR1/p7/3p2r1/P7/1Q6

#2

12 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Rg1
      • 2.Qxd3#
    • 1...Rg2
      • 2.Qxd3#
    • 1...Rxg5
      • 2.Qxd3#
    • 1...d2
      • 2.Qe4#
  • Tries
    • 1.Sxd7?
      • threat
        • 2.Qb5#
      • 1...Kc4
        • 2.Be6#
      • 1...Kxc6
        • 2.Be4#
      • 1...Bd6
        • 2.Sxb6#
      • 1...b5
        • 2.Qxb5#
      • 1...Be5!
    • 1.Rxg3?
      • threat
        • 2.Rxd3#
        • 2.Qxd3#
      • 1...Kd4
        • 2.Rxd3#
        • 2.Qxd3#
      • 1...d2
        • 2.Rd3#
        • 2.Qd3#
        • 2.Qe4#
      • 1...Bxe5!
    • 1.Qb4?
      • threat
        • 2.Qc4#
        • 2.Qe4#
      • 1...Bxe5
        • 2.Qe4#
      • 1...Re3
        • 2.Qc4#
      • 1...b5
        • 2.Qc5#
        • 2.Qe4#
      • 1...Rg4!
  • Keys
    • 1.Sf3!
      • threat
        • 2.Qb5#
      • 1...Kc4
        • 2.Bxd3#
      • 1...Kxc6
        • 2.Bxd7#
      • 1...dxc6
        • 2.Qxd3#
      • 1...Bd6
        • 2.Qxd3#
      • 1...b5
        • 2.Qxb5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 5
    • REMOVED MATES = 4
  • Sets
    • R(b);N_GUARD::QAR2(A),XP(a)
    • R(b);N_GUARD,XR(E)::QAR2(A),XP(a)
    • P(a);OGATE::QAB1(A)
  • Tries
    • Try
      • S(C);XP(g)
      • Threat
        • QAR2(A)
      • Vars
        • K(d);N_GUARD,S_FLIGHT::B(D)
        • K(d);N_GUARD,P_SPINB(f),S_FLIGHT,XP(G)::B(D)
        • B(f);N_GUARD::S(C),XP(e)
        • P(e);::QAR2(A),XP(e)
      • Refutation
        • B(f);
    • Try
      • R(E);XR(b)
      • Threat
        • DUALS(2)
      • Refutation
        • B(f);XS(C)
    • Try
      • Q(A);
      • Threat
        • DUALS(2)
      • Vars
        • B(f);XS(C)::QAB1(A)
        • R(b);::QAB1(A)
      • Refutation
        • R(b);
  • Actual
    • S(C);
    • Threat
      • QAR2(A)
    • Vars
      • K(d);N_GUARD,S_CUTB(f),S_CUTR(b),S_FLIGHT::B(D),XP(a)
      • K(d);N_GUARD,P_SPINB(f),S_CUTR(b),S_FLIGHT,XP(G)::B(D),XP(g)
      • P(g);SBLOCK,XP(G)::QAR2(A),XP(a)
      • B(f);::QAR2(A),XP(a)
      • P(e);::QAR2(A),XP(e)
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