MESON Chess Problem Database

Problem Display
PID: 250098 (4q1n1/p2pbNB1/2nQ4/3PPk1P/4R3/K4NrR/2B5/1b6 w - - 0 1)

Mari, Alberto

Comm., Tijdschrift vd NSB, 1927

4q1n1/p2pbNB1/2nQ4/3PPk1P/4R3/K4NrR/2B5/1b6

#2

11 + 9

5454 Near Snap 2021
6490 yacpdb 2021

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf3+
      • 2.Rxf3#
    • 1...Rg5
      • 2.Sh4#
    • 1...Ba2
      • 2.Ra4#
      • 2.Rb4#
      • 2.Rc4#
      • 2.Rd4#
      • 2.Reh4#
    • 1...Bg5
      • 2.Qg6#
    • 1...Bxd6+
      • 2.Sxd6#
    • 1...Sf6
      • 2.Sh6#
    • 1...Sh6
      • 2.Sxh6#
  • Tries
    • 1.e6?
      • threat
        • 2.Rf4#
      • 1...Rxf3+
        • 2.Rxf3#
      • 1...Bxd6+
        • 2.Sxd6#
      • 1...Se5!
  • Keys
    • 1.Bh6!
      • threat
        • 2.Rf4#
      • 1...Rxf3+
        • 2.Rxf3#
      • 1...Bxd6+
        • 2.Sxd6#
      • 1...Sxh6
        • 2.Sxh6#
      • 1...Rg5
        • 2.Sh4#
      • 1...Bg5
        • 2.Qg6#

This anticipates 383(1938)

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 1
  • Sets
    • R(b);CHECK,OGATE,XS(C)::R(D),XR(b)
    • R(b);N_PINS(C)::S(C)
    • B(g);N_PINQ(I)::QAB1(I)
    • B(g);CHECK,XQ(I)::S(J),XB(g)
    • S(i);N_GUARD::S(J)
    • S(i);N_GUARD::S(J),XS(i)
  • Tries
    • Try
      • P(G);
      • Threat
        • B(A)+R(E),DCHECK
      • Vars
        • R(b);CHECK,OGATE,XS(C)::R(D),XR(b)
        • B(g);CHECK,XQ(I)::S(J),XB(g)
      • Refutation
        • S(d);
  • Actual
    • B(K);
    • Threat
      • B(A)+R(E),DCHECK
    • Vars
      • R(b);CHECK,OGATE,XS(C)::R(D),XR(b)
      • B(g);CHECK,XQ(I)::S(J),XB(g)
      • S(i);XB(K)::S(J),XS(i)
      • R(b);N_PINS(C)::S(C)
      • B(g);N_PINQ(I)::QAB1(I)
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