MESON Chess Problem Database

Problem Display
PID: 164756 (4RB2/3prBNp/R2bP2k/5PNP/4PQp1/5PnP/6K1/8 w - - 0 1)

Persson, Lars Holger

Schackvarlden, 1932

4RB2/3prBNp/R2bP2k/5PNP/4PQp1/5PnP/6K1/8

#2

14 + 7

15148 Sadier Collection 2017

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf7
      • 2.Sxf7#
    • 1...Sxf5
      • 2.Sxf5#
    • 1...Sxh5
      • 2.Sxh5#
    • 1...dxe6
      • 2.S7xe6#
  • Keys
    • 1.exd7!
      • threat
        • 2.S7e6#
      • 1...gxf3+
        • 2.Sxf3#
      • 1...gxh3+
        • 2.Sxh3#
      • 1...Rxe4
        • 2.Sxe4#
      • 1...Rxd7
        • 2.Re6#
      • 1...Rxf7
        • 2.Sxf7#
      • 1...Rxe8
        • 2.Sxe8#
      • 1...Sxf5
        • 2.Sxf5#
      • 1...Sxh5
        • 2.Sxh5#
      • 1...Re5
        • 2.S5e6#
      • 1...Re6
        • 2.Rxe6#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 7
    • REMOVED MATES = 1
  • Sets
    • R(f);XB(K)::QAB(E)+S(G),DCHECK,XR(f)
    • S(a);XP(F)::B(N)+S(L),DCHECK,XS(a)
    • S(a);XP(H)::B(N)+S(L),XS(a)
    • P(e);XP(J)::B(N)+S(L),XP(e)
  • Actual
    • P(J);P_PINB(c),XP(e)
    • Threat
      • B(N)+S(L)
    • Vars
      • P(b);CHECK,XP(B)::QAB(E)+S(G),XP(b)
      • P(b);CHECK,XP(C)::QAB(E)+S(G),XP(b)
      • R(f);XP(D)::QAB(E)+S(G),XR(f)
      • R(f);OGATE,XP(J)::R(M)
      • R(f);XB(K)::QAB(E)+S(G),DCHECK,XR(f)
      • R(f);XR(M)::B(N)+S(L),XR(f)
      • S(a);XP(F)::B(N)+S(L),DCHECK,XS(a)
      • S(a);XP(H)::B(N)+S(L),XS(a)
      • R(f);::QAB(E)+S(G)
      • R(f);N_SPINB(c),OGATE::R(M),XR(f)
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