MESON Chess Problem Database

Problem Display
PID: 162530 (2QK4/1p1n4/3N1P1p/2pkP3/b7/b1P2R1N/6RB/7B w - - 0 1)

Guida, Marco

Die Schwalbe, 2015

2QK4/1p1n4/3N1P1p/2pkP3/b7/b1P2R1N/6RB/7B

#2

11 + 7

SOLUTION

  • SOUND
  • Sets
    • 1...Sb6
      • 2.Rd2#
      • 2.Rd3#
    • 1...Sxf6
      • 2.Rd2#
      • 2.Rd3#
    • 1...Sb8
      • 2.Rd2#
      • 2.Rd3#
    • 1...Sf8
      • 2.Rd2#
      • 2.Rd3#
    • 1...c4
      • 2.Qxc4#
  • Tries
    • 1.Kc7?
      • threat
        • 2.Qg8#
      • 1...Ke6
        • 2.Qg8#
      • 1...Sxe5
        • 2.Sf4#
      • 1...Sxf6
        • 2.Rd2#
        • 2.Rd3#
      • 1...Sf8
        • 2.Rd2#
        • 2.Rd3#
      • 1...c4!
    • 1.Ke7?
      • threat
        • 2.Rd2#
        • 2.Rd3#
      • 1...Sxe5
        • 2.Sf4#
      • 1...Bc1
        • 2.Rd3#
      • 1...Bc2
        • 2.Qxb7#
      • 1...c4
        • 2.Rd2#
        • 2.Qxc4#
      • 1...Bb5!
    • 1.Re2?
      • threat
        • 2.Sf4#
      • 1...Ke6
        • 2.Sf4#
      • 1...Sxe5
        • 2.Rd3#
      • 1...Bc1!
    • 1.Rf5?
      • threat
        • 2.Sf4#
      • 1...Ke6
        • 2.Sf4#
      • 1...Sxe5
        • 2.Rd2#
      • 1...Bc1!
    • 1.c4+?
      • 1...Kd4
        • 2.Rd2#
        • 2.Rg4#
      • 1...Ke6!
  • Keys
    • 1.Re3!
      • threat
        • 2.Sf4#
      • 1...Ke6
        • 2.Sf4#
      • 1...Sxe5
        • 2.Rd2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(c);OGATE::QAB1(J),XP(c)
  • Tries
    • Try
      • K(K);S_FLIGHT
      • Threat
        • QAB(J)
      • Vars
        • K(d);P_SPINS(g),S_FLIGHT::QAB(J)
        • S(g);SBLOCK,XP(G)::S(F)
      • Refutation
        • P(c);
    • Try
      • K(K);S_FLIGHT
      • Threat
        • DUALS(2)
      • Vars
        • S(g);SBLOCK,XP(G)::S(F)
        • B(a);::R(E)
        • B(b);N_GUARD::QAB(J),XP(f)
      • Refutation
        • B(b);
    • Try
      • R(B);
      • Threat
        • S(F)
      • Vars
        • K(d);P_SPINS(g),S_FLIGHT::S(F)
        • S(g);XP(G)::B(A)+R(E),DCHECK
      • Refutation
        • B(a);
    • Try
      • R(E);
      • Threat
        • S(F)
      • Vars
        • K(d);P_SPINS(g),S_FLIGHT::S(F)
        • S(g);P_SPINS(g),XP(G)::B(A)+R(B),DCHECK
      • Refutation
        • B(a);
    • Try
      • P(D);CHECK
      • Refutation
        • K(d);P_SPINS(g),S_FLIGHT
  • Actual
    • R(E);
    • Threat
      • S(F)
    • Vars
      • K(d);P_SPINS(g),S_FLIGHT::S(F)
      • S(g);XP(G)::B(A)+R(B),DCHECK
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