MESON Chess Problem Database

Problem Display
PID: 254957 (1bb1Q3/1p1R4/3p4/N1PP4/1B1kP1pK/1p4R1/5P2/2n1Nn2 w - - 0 1)

Labai, Zoltan

Svitek, Miroslav

The Problemist, 2021

1bb1Q3/1p1R4/3p4/N1PP4/1B1kP1pK/1p4R1/5P2/2n1Nn2

#2

11 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Sa2
      • 2.Rd3#
    • 1...Se2
      • 2.Rd3#
    • 1...Sd3
      • 2.Rxd3#
    • 1...Se3
      • 2.fxe3#
    • 1...b2
      • 2.Sc2#
    • 1...dxc5
      • 2.Bc3#
  • Tries
    • 1.Rxb3?
      • threat
        • 2.Sc2#
      • 1...Se3
        • 2.fxe3#
      • 1...Sxb3!
    • 1.Rc3?
      • threat
        • 2.Rc4#
      • 1...Se3
        • 2.fxe3#
      • 1...b5
        • 2.Sc6#
      • 1...Sd2!
    • 1.Re3?
      • threat
        • 2.Qh8#
      • 1...dxc5
        • 2.Bc3#
      • 1...Sd3
        • 2.Rxd3#
      • 1...Sxe3!
    • 1.Re7?
      • threat
        • 2.Qh8#
      • 1...dxc5
        • 2.Bc3#
      • 1...Sd3
        • 2.Rxd3#
      • 1...Be6!
  • Keys
    • 1.Rxg4!
      • threat
        • 2.Qh8#
      • 1...dxc5
        • 2.e5#
      • 1...Sd3
        • 2.Sf3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 2
    • ADDED MATES = 0
    • REMOVED MATES = 4
  • Sets
    • S(a);N_GUARD::R1(C)
    • S(a);N_GUARD::R1(C),XS(a)
    • S(b);OGATE::P(B),XS(b)
    • P(c);N_GUARD::S(A)
    • P(f);SBLOCK,XP(H)::B(D)
  • Tries
    • Try
      • R(C);XP(c)
      • Threat
        • S(A)
      • Vars
        • S(b);OGATE::P(B),XS(b)
      • Refutation
        • S(a);XR(C)
    • Try
      • R(C);
      • Threat
        • R1(C)
      • Vars
        • S(b);OGATE::P(B),XS(b)
        • P(g);N_GUARD::S(G)
      • Refutation
        • S(b);
    • Try
      • R(C);
      • Threat
        • QAB(K)
      • Vars
        • P(f);SBLOCK,XP(H)::B(D)
        • S(a);N_GUARD::R1(C),XS(a)
      • Refutation
        • S(b);XR(C)
    • Try
      • R(J);
      • Threat
        • QAB(K)
      • Vars
        • P(f);SBLOCK,XP(H)::B(D)
        • S(a);N_GUARD::R1(C),XS(a)
      • Refutation
        • B(i);
  • Actual
    • R(C);XP(e)
    • Threat
      • QAB(K)
    • Vars
      • P(f);XP(H)::R(C)+P(E)
      • S(a);SBLOCK::S(A)
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