MESON Chess Problem Database

Problem Display
PID: 260729 (1R5K/2pp4/pR6/1BkP2p1/Ppp1PB2/4P3/2PNp3/6Qb w - - 0 1)

Labai, Zoltan

Svitek, Miroslav

Die Schwalbe, 2022

1R5K/2pp4/pR6/1BkP2p1/Ppp1PB2/4P3/2PNp3/6Qb

#2

12 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...c3
      • 2.Sb3#
    • 1...gxf4
      • 2.exf4#
    • 1...axb5
      • 2.Rxb5#
    • 1...cxb6
      • 2.Rc8#
    • 1...d6
      • 2.Rc6#
  • Tries
    • 1.Bxc7?
      • threat
        • 2.Bd6#
      • 1...d6
        • 2.Bxd6#
        • 2.Rc6#
      • 1...Bxe4!
    • 1.Bxa6?
      • threat
        • 2.Rb5#
      • 1...gxf4
        • 2.exf4#
      • 1...cxb6
        • 2.Rc8#
      • 1...c6!
    • 1.Bxd7?
      • threat
        • 2.Rc6#
      • 1...cxb6
        • 2.Rc8#
      • 1...c6
        • 2.Rxc6#
      • 1...Bxe4!
    • 1.Qxg5?
      • threat
        • 2.d6#
      • 1...Bxe4
        • 2.Sxe4#
      • 1...d6
        • 2.Rc6#
      • 1...b3!
  • Keys
    • 1.Qa1!
      • threat
        • 2.Qd4#
      • 1...b3
        • 2.Qa3#
      • 1...c3
        • 2.Sb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 4
  • Sets
    • P(d);N_GUARD::S(C)
    • P(f);OGATE,XB(G)::QAB(A)+P(D),XP(f)
    • P(g);OGATE,XB(H)::R1(J),XP(g)
    • P(h);OGATEB,SBLOCK,XR(J)::R(K)
    • P(i);N_GUARD::R1(J)
  • Tries
    • Try
      • B(G);XP(h)
      • Threat
        • B(G)
      • Refutation
        • B(a);XP(F)
    • Try
      • B(H);XP(g)
      • Threat
        • R1(J)
      • Vars
        • P(f);OGATE,XB(G)::QAB(A)+P(D),XP(f)
        • P(h);OGATEB,SBLOCK,XR(J)::R(K)
      • Refutation
        • P(h);
    • Try
      • B(H);XP(i)
      • Threat
        • R1(J)
      • Vars
        • P(h);OGATEB,SBLOCK,XR(J)::R(K)
        • P(h);::R1(J),XP(h)
      • Refutation
        • B(a);XP(F)
    • Try
      • Q(A);XP(f)
      • Threat
        • QAR(A)+P(I)
      • Vars
        • B(a);XP(F)::S(C),XB(a)
        • P(i);N_GUARD::R1(J)
      • Refutation
        • P(c);
  • Actual
    • Q(A);
    • Threat
      • QAB1(A)
    • Vars
      • P(c);OGATEB::QAB(A)
      • P(d);N_GUARD::S(C)
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