MESON Chess Problem Database

Problem Display
PID: 103322 (1NkB4/1r1R2pK/B6p/5Q1r/8/8/2b5/2R5 w - - 0 1)

Mari, Alberto

Il Littorale, 1929-1931

1NkB4/1r1R2pK/B6p/5Q1r/8/8/2b5/2R5

#2

7 + 6

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Tries
    • 1.Sc6?
      • threat
        • 2.Bxb7#
        • 2.Rc7#
      • 1...Rxf5
        • 2.Rc7#
      • 1...Bxf5+!
    • 1.Ba5?
      • threat
        • 2.Rd8#
      • 1...g5
        • 2.Rxb7#
      • 1...g6
        • 2.Qf8#
      • 1...Kxb8!
  • Keys
    • 1.Bb6!
      • threat
        • 2.Rd8#
      • 1...Kxb8
        • 2.Rd8#
      • 1...g5
        • 2.Rxb7#
      • 1...g6
        • 2.Qf8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(F);N_PINB(a)
      • Threat
        • DUALS(2)
      • Vars
        • R(b);XQ(B)::R1(D)
      • Refutation
        • B(a);CHECK,XQ(B)
    • Try
      • B(G);
      • Threat
        • QAB(B)+R(D),DCHECK
      • Vars
        • P(e);P_PINR(D),S_CUTR(b)::QAB(B)+R(D),XR(d)
        • P(e);N_PINQ(B),P_PINR(D)::QAR(B)
      • Refutation
        • K(f);N_SPINB(a),N_SPINR(d),P-FLIGHT,XS(F)
  • Actual
    • B(G);
    • Threat
      • QAB(B)+R(D),DCHECK
    • Vars
      • K(f);N_SPINB(a),N_SPINR(d),P-FLIGHT,XS(F)::R(D)
      • P(e);P_PINR(D),S_CUTR(b)::QAB(B)+R(D),XR(d)
      • P(e);N_PINQ(B),P_PINR(D)::QAR(B)
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