MESON Chess Problem Database

Problem Display
PID: 108624 (KNk2B1R/2P5/NR6/3r4/1Q6/8/6r1/7q w - - 0 1)

Kiss, Ivan

Gyorsszer, 1986

KNk2B1R/2P5/NR6/3r4/1Q6/8/6r1/7q

#2

8 + 4

6490 yacpdb 2009
5454 Near Snap 2022

SOLUTION

  • SOUND
  • Tries
    • 1.Bd6+?
      • 1...Rg8
        • 2.Rxg8#
      • 1...Qxh8!
    • 1.Bh6+?
      • 1...Rd8
        • 2.Rxd8#
        • 2.cxd8Q#
        • 2.cxd8R#
      • 1...Rg8!
    • 1.Bg7+?
      • 1...Rd8
        • 2.Rxd8#
        • 2.cxd8Q#
        • 2.cxd8R#
      • 1...Qxh8!
    • 1.Rg6?
      • threat
        • 2.Qb7#
      • 1...Qb1
        • 2.Bd6#
      • 1...Rb5
        • 2.Bh6#
      • 1...Rb2!
    • 1.Rbh6?
      • threat
        • 2.Qb7#
      • 1...Rb2
        • 2.Bd6#
      • 1...Rb5
        • 2.Bg7#
      • 1...Qb1!
    • 1.Qg4+?
      • 1...Rf5
        • 2.Bh6#
        • 2.Qxf5#
      • 1...Rd7
        • 2.Bh6#
        • 2.Qxd7#
      • 1...Rxg4!
  • Keys
    • 1.Rd6!
      • threat
        • 2.Qb7#
      • 1...Qb1
        • 2.Bg7#
      • 1...Rb2
        • 2.Bh6#
      • 1...Rb5
        • 2.Rd8#

Anticipated by 242718(1961)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • B(G);CHECK
      • Vars
        • R(b);N_GUARD,P_SPINR(b)::R(H),XR(b)
      • Refutation
        • Q(a);XR(H)
    • Try
      • B(G);CHECK
      • Refutation
        • R(b);P_SPINR(b)
    • Try
      • B(G);CHECK
      • Refutation
        • Q(a);XR(H)
    • Try
      • R(C);
      • Threat
        • QAB1(A)
      • Vars
        • Q(a);N_GUARD::R(H)+B(G)
        • R(c);N_GUARD::R(H)+B(G)
      • Refutation
        • R(b);
    • Try
      • R(C);
      • Threat
        • QAB1(A)
      • Vars
        • R(b);N_GUARD::R(H)+B(G)
        • R(c);N_GUARD::R(H)+B(G)
      • Refutation
        • Q(a);
    • Try
      • Q(A);CHECK
      • Refutation
        • R(b);XQ(A)
  • Actual
    • R(C);
    • Threat
      • QAB1(A)
    • Vars
      • Q(a);N_GUARD::R(H)+B(G)
      • R(b);N_GUARD::R(H)+B(G)
      • R(c);N_GUARD::R1(C)
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