MESON Chess Problem Database

Problem Display
PID: 270328 (4K3/3NNp2/2p1k3/5r2/8/8/1R5b/B2Q4 w - - 0 1)

Yakimovich, Daniil

The Problemist Supplement, 2022

4K3/3NNp2/2p1k3/5r2/8/8/1R5b/B2Q4

#2

6 + 5

SOLUTION

  • SOUND
  • Tries
    • 1.Sf8+?
      • 1...Ke5
        • 2.Rb4#
      • 1...Kf6!
    • 1.Rd2?
      • threat
        • 2.Sf8#
      • 1...Be5
        • 2.Qb3#
      • 1...Re5
        • 2.Rd6#
      • 1...Rd5!
    • 1.Rf2?
      • threat
        • 2.Sf8#
      • 1...Rd5
        • 2.Rf6#
      • 1...Be5!
  • Keys
    • 1.Rb6!
      • threat
        • 2.Sf8#
      • 1...Rd5
        • 2.Qxd5#
      • 1...Be5
        • 2.Qd5#
      • 1...Re5
        • 2.Rxc6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(D);CHECK
      • Vars
        • K(d);P-FLIGHT::B(A)+R(C)
      • Refutation
        • K(d);P-FLIGHT
    • Try
      • R(C);
      • Threat
        • S(D)
      • Vars
        • B(a);S_CUTR(b)::QAB(B)
        • R(b);S_CUTB(a)::R1(C)
      • Refutation
        • R(b);
    • Try
      • R(C);
      • Threat
        • S(D)
      • Vars
        • R(b);OGATE::R1(C)
      • Refutation
        • B(a);
  • Actual
    • R(C);P_PINP(c)
    • Threat
      • S(D)
    • Vars
      • R(b);N_GUARD::QAB1(B),XR(b)
      • B(a);S_CUTR(b)::QAB1(B)
      • R(b);S_CUTB(a)::R(C),XP(c)
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