MESON Chess Problem Database

Problem Display
PID: 54100 (2r5/b1N4Q/4PBB1/1p1p2pp/Rn1n1kp1/2K3Nr/pP2bPPP/8 w - - 0 1)

Coombes, TA

Chess, 1943

2r5/b1N4Q/4PBB1/1p1p2pp/Rn1n1kp1/2K3Nr/pP2bPPP/8

#2

12 + 13

SOLUTION

  • SOUND
  • Sets
    • 1...Rxg3+
      • 2.hxg3#
    • 1...Rxc7+
      • 2.Qxc7#
    • 1...Sd3
      • 2.Sxe2#
    • 1...Sbc6
      • 2.Sxd5#
    • 1...Sf3
      • 2.Sxe2#
    • 1...Sdc6
      • 2.Sxd5#
  • Keys
    • 1.Qg7!
      • threat
        • 2.Be5#
      • 1...Rxg3+
        • 2.hxg3#
      • 1...Rxc7+
        • 2.Qxc7#
      • 1...Sd3
        • 2.Sxe2#
      • 1...Sbc6
        • 2.Sxd5#
      • 1...Sf3
        • 2.Sxe2#
      • 1...Sdc6
        • 2.Sxd5#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 0
    • REMOVED MATES = 0
  • Sets
    • R(c);CHECK,OGATE,P_PINS(K),XS(F)::P(D),XR(c)
    • R(m);CHECK,OGATE,XS(K)::QAB(L),XR(m)
    • S(d);N_PINS(F),P_PINS(K),P_SPINS(e)::S(F),XB(b)
    • S(d);P_SPINS(e)::S(K),XP(i)
    • S(e);N_PINS(F),P_PINS(K),P_SPINS(d)::S(F),XB(b)
    • S(e);P_SPINS(d)::S(K),XP(i)
  • Actual
    • Q(L);
    • Threat
      • B(I)
    • Vars
      • R(c);CHECK,OGATE,P_PINS(K),XS(F)::P(D),XR(c)
      • R(m);CHECK,OGATE,XS(K)::QAB(L),XR(m)
      • S(d);N_PINS(F),P_PINS(K),P_SPINS(e)::S(F),XB(b)
      • S(d);P_SPINS(e)::S(K),XP(i)
      • S(e);N_PINS(F),P_PINS(K),P_SPINS(d)::S(F),XB(b)
      • S(e);P_SPINS(d)::S(K),XP(i)
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