MESON Chess Problem Database

Problem Display
PID: 237394 (4bb1K/3R2pp/2p1P2r/Q4p2/P1k1P3/P2r3q/2P1N3/8 w - - 0 1)

Labai, Zoltan

Kudesnik, 2008

4bb1K/3R2pp/2p1P2r/Q4p2/P1k1P3/P2r3q/2P1N3/8

#2

9 + 10

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rxa3
      • 2.Rd4#
    • 1...Rb3
      • 2.Rd4#
    • 1...Rc3
      • 2.Rd4#
    • 1...Re3
      • 2.Rd4#
    • 1...Rf3
      • 2.Rd4#
    • 1...Rg3
      • 2.Rd4#
    • 1...Rd4
      • 2.Rxd4#
    • 1...Rd6
      • 2.Qb4#
    • 1...Bb4
      • 2.Qxb4#
    • 1...Bc5
      • 2.Qa6#
    • 1...c5
      • 2.Qb5#
      • 2.Qa6#
  • Tries
    • 1.Rxd3?
      • threat
        • 2.Rd4#
        • 2.Qc3#
      • 1...Qe3
        • 2.Qc3#
      • 1...Bb4
        • 2.Rd4#
        • 2.Qxb4#
      • 1...Bc5
        • 2.Qc3#
        • 2.Qa6#
      • 1...c5
        • 2.Qc3#
      • 1...Qxd3!
    • 1.e7?
      • threat
        • 2.Qb4#
      • 1...Rxa3
        • 2.Rd4#
      • 1...Rb3
        • 2.Rd4#
      • 1...c5
        • 2.Qb5#
      • 1...Bxe7!
  • Keys
    • 1.Rc7!
      • threat
        • 2.Qb5#
      • 1...Rb3
        • 2.Qd5#
      • 1...Rd5
        • 2.Qxd5#
      • 1...Bc5
        • 2.Qa6#
      • 1...c5
        • 2.Qb4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 2
    • REMOVED MATES = 8
  • Sets
    • R(a);N_GUARD,XP(C)::R1(H)
    • R(a);N_GUARD::R1(H)
    • R(a);N_GUARD::R1(H),XR(a)
    • R(a);S_CUTB(j)::QAR1(F)
    • B(j);N_GUARD::QAR1(F),XB(j)
    • B(j);SBLOCK::QAB(F)
  • Tries
    • Try
      • R(H);XR(a)
      • Threat
        • DUALS(2)
      • Vars
        • Q(b);::QAR1(F)
        • P(e);SBLOCK::QAR1(F)
      • Refutation
        • Q(b);XR(H)
    • Try
      • P(G);
      • Threat
        • QAR1(F)
      • Vars
        • R(a);N_GUARD,XP(C)::R1(H)
        • R(a);N_GUARD::R1(H)
        • P(e);N_GUARD::QAB1(F)
      • Refutation
        • B(j);XP(G)
  • Actual
    • R(H);P_PINP(e)
    • Threat
      • QAB1(F)
    • Vars
      • R(a);N_GUARD::QAB1(F)
      • R(a);N_GUARD::QAB1(F),XR(a)
      • B(j);N_SPINP(e),SBLOCK::QAB(F)
      • P(e);S_CUTB(j)::QAR1(F)
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