MESON Chess Problem Database

Problem Display
PID: 274557 (Q7/b2r2p1/4N1K1/2P5/PpkPp3/1p2p3/1Pb5/2RR4 w - - 0 1)

Tkachenko, Sergiy Ivanovich

Pat a Mat, 2023

Q7/b2r2p1/4N1K1/2P5/PpkPp3/1p2p3/1Pb5/2RR4

#2

9 + 9

SOLUTION

  • SOUND
  • Sets
    • 1...Rxd4
      • 2.Rxd4#
  • Tries
    • 1.Qxe4?
      • threat
        • 2.d5#
      • 1...Rxd4
        • 2.Rxd4#
      • 1...Rd5
        • 2.Qd3#
      • 1...Bxc5!
  • Keys
    • 1.d5!
      • threat
        • 2.Rd4#
      • 1...Rxd5
        • 2.Qxd5#
      • 1...Bxc5
        • 2.Qa6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • R(h);OGATE,XP(E)::R1(B),XR(h)
  • Tries
    • Try
      • Q(I);P_SPINQ(I),XP(f)
      • Threat
        • QAR(I)+P(E)
      • Vars
        • R(h);OGATE,P_SPINR(h),XP(E)::R1(B),XR(h)
        • R(h);SBLOCK::QAB1(I)
      • Refutation
        • B(g);XP(F)
  • Actual
    • P(E);
    • Threat
      • R1(B)
    • Vars
      • R(h);OGATE,XP(E)::QAB1(I),XR(h)
      • B(g);OGATE,XP(F)::QAB(I)
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