MESON Chess Problem Database

Problem Display
PID: 274703 (1B1N3K/3P4/2N1P1pp/Ppkr4/1pPpR3/1P1P1B2/5Q2/6q1 w - - 0 1)

Guida, Marco

The Problemist, 2023

1B1N3K/3P4/2N1P1pp/Ppkr4/1pPpR3/1P1P1B2/5Q2/6q1

#2

13 + 8

SOLUTION

  • SOUND
  • Sets
    • 1...Re5
      • 2.Rxe5#
    • 1...Rd6
      • 2.Ba7#
  • Tries
    • 1.Sxd4?
      • threat
        • 2.Sb7#
      • 1...Rxd4
        • 2.Re5#
      • 1...Rxd7!
    • 1.Se5?
      • threat
        • 2.Sb7#
      • 1...Rxe5
        • 2.Rxe5#
      • 1...Rxd7
        • 2.Sxd7#
      • 1...bxc4!
    • 1.Rxd4?
      • threat
        • 2.Rxd5#
      • 1...Rxd4
        • 2.Sb7#
      • 1...Rxd7
        • 2.Rd5#
      • 1...Re5
        • 2.Sb7#
        • 2.Bd6#
        • 2.Ba7#
        • 2.Rd5#
      • 1...Rf5
        • 2.Sb7#
        • 2.Bd6#
        • 2.Ba7#
        • 2.Rd5#
      • 1...Rg5
        • 2.Sb7#
        • 2.Bd6#
        • 2.Ba7#
        • 2.Rd5#
      • 1...Rh5
        • 2.Sb7#
        • 2.Bd6#
        • 2.Ba7#
        • 2.Rd5#
      • 1...Rd6
        • 2.Sb7#
        • 2.Bxd6#
        • 2.Ba7#
        • 2.Rd5#
      • 1...Qa1!
  • Keys
    • 1.Re5!
      • threat
        • 2.Rxd5#
      • 1...Rxe5
        • 2.Sb7#
      • 1...Qg5
        • 2.Qxd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 1
    • REMOVED MATES = 1
  • Sets
    • R(f);OGATEB::R(F),XR(f)
    • R(f);SBLOCK::B(K)
  • Tries
    • Try
      • S(H);XP(c)
      • Threat
        • S(L)
      • Vars
        • R(f);OGATEB,P_SPINR(f),XS(H)::R(F)
      • Refutation
        • R(f);XP(J)
    • Try
      • S(H);
      • Threat
        • S(L)
      • Vars
        • R(f);OGATE,XS(H)::R(F),XR(f)
        • R(f);XP(J)::S(H),XR(f)
      • Refutation
        • P(d);XP(E)
    • Try
      • R(F);XP(c)
      • Threat
        • QAB(A)+R(F),DCHECK,XR(f)
      • Vars
        • R(f);P_SPINR(f),XR(F)::S(L)
        • R(f);XP(J)::QAB(A)+R(F),DCHECK
      • Refutation
        • Q(a);P_PINR(F)
  • Actual
    • R(F);P_PINR(f)
    • Threat
      • R1(F),XR(f)
    • Vars
      • R(f);N_SPINR(f),XR(F)::S(L)
      • Q(a);N_GUARD::QAB1(A),XP(c)
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