MESON Chess Problem Database

Problem Display
PID: 6563 (bN2R3/2p5/1ppkPr2/3n2N1/1P2KPpp/B7/7Q/3R4 w - - 0 1)

Mansfield, Comins

2nd Prize, Sports Referee, 1931/II

bN2R3/2p5/1ppkPr2/3n2N1/1P2KPpp/B7/7Q/3R4

#2

10 + 9

3550 Complete Mansfield/II 1997
5373 Conquering Kings 2004
15422 Problemskak 2015

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf4+
      • 2.Qxf4#
    • 1...Rxe6+
      • 2.Rxe6#
    • 1...Rg6
      • 2.Sf7#
    • 1...Rh6
      • 2.Sf7#
    • 1...Rf7
      • 2.Sxf7#
  • Tries
    • 1.Kd4?
      • threat
        • 2.Se4#
      • 1...Rxe6
        • 2.Sf7#
        • 2.Rxe6#
      • 1...Sc3
        • 2.Kxc3#
      • 1...Se7
        • 2.Rd8#
      • 1...c5+!
    • 1.Bb2?
      • threat
        • 2.Be5#
      • 1...Rxf4+
        • 2.Qxf4#
      • 1...Rxe6+
        • 2.Rxe6#
      • 1...Rf5!
  • Keys
    • 1.Kd3!
      • threat
        • 2.Se4#
      • 1...Sxb4+
        • 2.Kc4#
      • 1...Sxf4+
        • 2.Ke4#
      • 1...Rxf4
        • 2.Sf7#
      • 1...Rxe6
        • 2.Sf7#
        • 2.Rxe6#
      • 1...Sc3
        • 2.Kxc3#
      • 1...Se3
        • 2.Kxe3#
      • 1...Se7
        • 2.Rd8#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 1
    • ADDED MATES = 5
    • REMOVED MATES = 4
  • Sets
    • R(g);CHECK,OGATE,P_SPINR(g),XP(F)::QAB(B),XR(g)
    • R(g);CHECK,OGATE,XP(H)::R1(J),XR(g)
    • R(g);N_GUARD::S(G)
    • R(g);N_GUARD::S(G),XR(g)
  • Tries
    • Try
      • K(E);N_PINS(c),P-FLIGHT
      • Threat
        • S(G)
      • Vars
        • S(c);::R(A)+K(E),XS(c)
        • S(c);SBLOCK::R(J)
      • Refutation
        • P(e);CHECK
    • Try
      • B(C);
      • Threat
        • B(C)
      • Vars
        • R(g);CHECK,OGATE,P_SPINR(g),XP(F)::QAB(B),XR(g)
        • R(g);CHECK,OGATE,XP(H)::R1(J),XR(g)
      • Refutation
        • R(g);
  • Actual
    • K(E);N_PINS(c),S_FLIGHT
    • Threat
      • S(G)
    • Vars
      • S(c);CHECK,P_SPINS(c),XP(D)::R(A)+K(E)
      • S(c);CHECK,P_SPINS(c),XP(F)::R(A)+K(E)
      • R(g);N_GUARD,P_SPINR(g),XP(F)::S(G)
      • S(c);::R(A)+K(E),XS(c)
      • S(c);SBLOCK::R(J)
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