MESON Chess Problem Database

Problem Display
PID: 251593 (4b3/3P1pq1/3pp1B1/1NPNk1PR/2P2pKB/2bP4/5P2/8 w - - 0 1)

Garzon Roger, Jose Antonio

Problemas, 2021

4b3/3P1pq1/3pp1B1/1NPNk1PR/2P2pKB/2bP4/5P2/8

#2

12 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Qf6
      • 2.gxf6#
    • 1...Be1
      • 2.d4#
    • 1...Bd2
      • 2.d4#
    • 1...Bb4
      • 2.d4#
    • 1...Ba5
      • 2.d4#
    • 1...f3
      • 2.Bg3#
    • 1...exd5
      • 2.dxe8Q#
      • 2.dxe8R#
    • 1...f5+
      • 2.gxf5 ep#
    • 1...f6
      • 2.gxf6#
  • Tries
    • 1.Sdxc3?
      • threat
        • 2.d4#
      • 1...f5+
        • 2.gxf5 ep#
      • 1...dxc5!
    • 1.Sb4?
      • threat
        • 2.Sc6#
      • 1...f5+
        • 2.gxf5 ep#
      • 1...Bxb4
        • 2.d4#
      • 1...Bxd7!
    • 1.Se7?
      • threat
        • 2.Sc6#
      • 1...f5+
        • 2.gxf5 ep#
      • 1...Bxd7!
  • Keys
    • 1.Bg3!
      • threat
        • 2.Bxf4#
      • 1...f5+
        • 2.gxf5 ep#
      • 1...fxg3
        • 2.f4#
      • 1...exd5
        • 2.dxe8Q#
        • 2.dxe8R#
      • 1...Qf6
        • 2.gxf6#
      • 1...Bd2
        • 2.d4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 5
  • Sets
    • Q(g);OGATE::R(J)+P(I),XQ(g)
    • B(a);N_GUARD::P(B)
    • P(b);OGATEB::B(E)
    • P(e);XS(H)::PXB(h)=Q
    • P(f);CHECK,OGATE::R(J)+P(I),XP(f),EP
    • P(f);OGATE::R(J)+P(I),XP(f)
  • Tries
    • Try
      • S(H);XB(a)
      • Threat
        • P(B)
      • Vars
        • P(f);CHECK,OGATE::R(J)+P(I),XP(f),EP
      • Refutation
        • P(d);XP(G)
    • Try
      • S(H);
      • Threat
        • S(H)
      • Vars
        • P(f);CHECK,OGATE::R(J)+P(I),XP(f),EP
        • B(a);N_GUARD,XS(H)::P(B)
      • Refutation
        • B(h);XP(L)
    • Try
      • S(H);
      • Threat
        • S(H)
      • Vars
        • P(f);CHECK,OGATE::R(J)+P(I),XP(f),EP
      • Refutation
        • B(h);XP(L)
  • Actual
    • B(E);P_PINP(b)
    • Threat
      • B(E),XP(b)
    • Vars
      • P(f);CHECK,OGATE::R(J)+P(I),XP(f),EP
      • P(b);N_SPINP(b),OGATE,XB(E)::P(A)
      • P(e);XS(H)::PXB(h)=Q
      • Q(g);OGATE::R(J)+P(I),XQ(g)
      • B(a);N_GUARD::P(B)
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