MESON Chess Problem Database

Problem Display
PID: 242611 (1Q6/pBB5/PR2P3/1P1NNp2/1P1kb3/3PRp2/5P2/7K w - - 0 1)

Casa, Alex

Source?, 0000

1Q6/pBB5/PR2P3/1P1NNp2/1P1kb3/3PRp2/5P2/7K

#2

14 + 5

15148 Sadier Collection 2021

SOLUTION

  • SOUND
  • Sets
    • 1...f4
      • 2.Rxe4#
    • 1...axb6
      • 2.Bxb6#
  • Tries
    • 1.Rc6?
      • threat
        • 2.Rc4#
      • 1...Kxd5
        • 2.Qd8#
      • 1...Bxd5
        • 2.Qxa7#
      • 1...Bxd3!
    • 1.Rd6?
      • threat
        • 2.Sc6#
      • 1...Kxe5
        • 2.Qh8#
      • 1...Bxd3
        • 2.Qxa7#
      • 1...Bxd5!
  • Keys
    • 1.Qxa7!
      • 1...Bxd3
        • 2.Rd6#
      • 1...Bxd5
        • 2.Rc6#
      • 1...f4
        • 2.Rxe4#

FEATURES

  • Static
    • TYPE = INCOMPLETE_BLOCK
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 1
  • Sets
    • P(d);N_GUARD::R1(D),XB(c)
    • P(e);OGATE,XR(J)::B(M),XP(e)
  • Tries
    • Try
      • R(J);
      • Threat
        • R1(J)
      • Vars
        • K(b);OGATEB,P-FLIGHT,XS(G)::QAR(N)
        • B(c);SBLOCK,XS(G)::QAB(N),XP(e)
      • Refutation
        • B(c);XP(C)
    • Try
      • R(J);
      • Threat
        • S(H)
      • Vars
        • K(b);OGATEB,P_SPINB(c),S_FLIGHT,XS(H)::QAB(N)
        • B(c);XP(C)::QAB(N),XP(e)
      • Refutation
        • B(c);P_SPINB(c),XS(G)
  • Actual
    • Q(N);XP(e)
    • Vars
      • B(c);XP(C)::QAB(N)+R(J)
      • B(c);SBLOCK,XS(G)::QAB(N)+R(J)
      • P(d);N_GUARD::R1(D),XB(c)
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