MESON Chess Problem Database

Problem Display
PID: 283567 (3k4/R2p1R2/3p4/1pP1BpK1/4r1b1/p7/6Q1/4r3 w - - 0 1)

Witt, Andreas

Pat a Mat, 2025

3k4/R2p1R2/3p4/1pP1BpK1/4r1b1/p7/6Q1/4r3

#2

6 + 9

3713 Snap 2026

SOLUTION

  • SOUND
  • Sets
    • 1...Kc8
      • 2.Rf8#
    • 1...Re2
      • 2.Qa8#
    • 1...Re3
      • 2.Qa8#
    • 1...Ra4
      • 2.Qa8#
    • 1...Rb4
      • 2.Qa8#
    • 1...Rc4
      • 2.Qa8#
    • 1...Rd4
      • 2.Qa8#
    • 1...Rf4
      • 2.Qa8#
    • 1...Rxe5
      • 2.Qa8#
    • 1...dxc5
      • 2.Ra8#
    • 1...d5
      • 2.Ra8#
  • Tries
    • 1.Bxd6?
      • threat
        • 2.Ra8#
      • 1...Ke8
        • 2.Rf8#
      • 1...Ra4
        • 2.Qa8#
      • 1...Kc8!
    • 1.cxd6?
      • threat
        • 2.Ra8#
        • 2.Rf8#
      • 1...Kc8
        • 2.Rf8#
      • 1...Rxe5
        • 2.Ra8#
        • 2.Qa8#
      • 1...Rc1
        • 2.Rf8#
      • 1...Ra4
        • 2.Rf8#
        • 2.Qa8#
      • 1...Rc4
        • 2.Rf8#
      • 1...Bh5
        • 2.Ra8#
      • 1...Ke8!
  • Keys
    • 1.Kf6!
      • threat
        • 2.Rf8#
      • 1...Kc8
        • 2.Rf8#
      • 1...Ke8
        • 2.Ra8#
      • 1...Rxe5
        • 2.Qa8#
      • 1...Bh5
        • 2.Qg8#

This anticipates 287125(2026)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 9
  • Sets
    • K(i);N_GUARD,P-FLIGHT::R(F)
    • R(c);OGATE::QAR(A)
    • R(c);OGATE,XB(C)::QAR(A)
    • P(g);XP(B)::R(E)
    • P(g);::R(E)
  • Tries
    • Try
      • B(C);XP(g)
      • Threat
        • R(E)
      • Vars
        • K(i);P-FLIGHT,S_CUTR(c)::R1(F)
        • R(c);OGATE::QAR(A)
      • Refutation
        • K(i);P-FLIGHT
    • Try
      • P(B);XP(g)
      • Threat
        • DUALS(2)
      • Vars
        • K(i);P-FLIGHT::R(F)
        • R(a);::R(F)
        • R(c);::R(F)
        • B(d);::R(E)
      • Refutation
        • K(i);P-FLIGHT
  • Actual
    • K(D);S_FLIGHT
    • Threat
      • R(F)
    • Vars
      • K(i);P-FLIGHT::R(F)
      • K(i);N_GUARD,P-FLIGHT::R(E)
      • R(c);OGATE,XB(C)::QAR(A)
      • B(d);OGATE::QAR(A)
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