MESON Chess Problem Database

Problem Display
PID: 16626 (4R3/2p5/n1Pk3r/K1R4r/N2PBb1p/3Q4/3pn2B/8 w - - 0 1)

Mott-Smith, Geoffrey

2nd HM., American Chess Bulletin, 1942

4R3/2p5/n1Pk3r/K1R4r/N2PBb1p/3Q4/3pn2B/8

#2

9 + 9

5088 How to Solve Chess Problems 1945

SOLUTION

  • SOUND
  • Sets
    • 1...Rxc5+
      • 2.dxc5#
    • 1...Re5
      • 2.dxe5#
    • 1...Be5
      • 2.dxe5#
    • 1...Sxc5
      • 2.dxc5#
  • Tries
    • 1.Bxf4+?
      • 1...Re5
        • 2.Bxe5#
        • 2.dxe5#
      • 1...Sxf4!
    • 1.Rd5+?
      • 1...Kxc6
        • 2.Qb5#
        • 2.Qxa6#
      • 1...Rxd5+!
  • Keys
    • 1.Rce5!
      • threat
        • 2.Rd8#
      • 1...Rxe5+
        • 2.dxe5#
      • 1...Bxe5
        • 2.dxe5#
      • 1...Sxd4
        • 2.Qxd4#
      • 1...Re6
        • 2.Rxe6#
      • 1...Rh7
        • 2.Re6#
      • 1...Rh8
        • 2.Re6#
      • 1...Bg5
        • 2.R5e6#
      • 1...Sc5
        • 2.dxc5#
      • 1...Sb8
        • 2.Qa3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 1
  • Sets
    • R(e);CHECK,OGATE,XR(G)::QAR(B)+P(D)DCHECK,XR(e)
    • R(e);N_SPINB(c),OGATE::QAR(B)+P(D)DCHECK,XR(e)
    • B(c);N_PINR(G),OGATE::QAR(B)+P(D)DCHECK,XB(c)
    • S(f);OGATE,XR(G)::QAR(B)+P(D)DCHECK,XS(f)
  • Tries
    • Try
      • B(A);CHECK,XB(c)
      • Refutation
        • S(b);XB(A)
    • Try
      • R(G);CHECK
      • Refutation
        • R(e);CHECK,XR(G)
  • Actual
    • R(G);N_PINB(c)
    • Threat
      • R(I)
    • Vars
      • R(e);CHECK,OGATE,XR(G)::QAR(B)+P(D)DCHECK,XR(e)
      • B(c);OGATE,P_SPINB(c),XR(G)::QAR(B)+P(D)DCHECK,XB(c)
      • S(b);OGATE,P_SPINS(b),XP(D)::QAR2(B),XS(b)
      • R(h);N_GUARD::R1(I),XR(h)
      • R(h);N_GUARD::R1(I)
      • B(c);N_PINR(G)::B(A)+R(G),DCHECK
      • S(f);N_PINR(G),OGATE::QAR(B)+P(D)DCHECK,XS(f)
      • S(f);N_GUARD::QAB(B)
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