MESON Chess Problem Database

Problem Display
PID: 52344 (8/8/p2P2p1/Rb3kN1/p1rP2NP/2QKP2P/1P1p1r2/1BB2R1n w - - 0 1)

Morse, Christopher Jeremy

2nd Comm., Problem Observer, 2004

8/8/p2P2p1/Rb3kN1/p1rP2NP/2QKP2P/1P1p1r2/1BB2R1n

#2

14 + 9

5373 Conquering Kings 2004
56 The Problemist 2005
145 StrateGems 2016

SOLUTION

  • SOUND
  • Sets
    • 1...Rxf1
      • 2.Kxd2#
      • 2.Ke2#
    • 1...Rf3
      • 2.Kxd2#
      • 2.Ke2#
      • 2.Rxf3#
    • 1...Rf4
      • 2.Kxd2#
      • 2.Ke2#
      • 2.Rxf4#
      • 2.e4#
    • 1...Rxc3+
      • 2.Kxc3#
    • 1...Rxd4+
      • 2.Kxd4#
    • 1...Sg3
      • 2.Rxf2#
    • 1...d1S
      • 2.e4#
    • 1...d1B
      • 2.e4#
  • Tries
    • 1.Rxb5+?
      • 1...Rc5
        • 2.Rxc5#
        • 2.Qxc5#
      • 1...axb5!
  • Keys
    • 1.Kc2!
      • threat
        • 2.Kd1#
      • 1...Rxc3+
        • 2.Kxc3#
      • 1...dxc1Q+
        • 2.Kxc1#
      • 1...dxc1S+
        • 2.Kxc1#
      • 1...dxc1R+
        • 2.Kxc1#
      • 1...d1Q+
        • 2.Kxd1#
      • 1...d1S+
        • 2.Kxd1#
      • 1...d1B+
        • 2.Kxd1#
      • 1...d1R+
        • 2.Kxd1#
      • 1...Rxf1
        • 2.Kxd2#
      • 1...Rxd4
        • 2.Qc8#
      • 1...Rc5
        • 2.Qxc5#
      • 1...Sg3
        • 2.Rxf2#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 3
    • ADDED MATES = 7
    • REMOVED MATES = 0
  • Sets
    • R(e);CHECK,XQ(E)::B(A)+K(F),XR(e)
    • R(e);CHECK,XP(I)::B(A)+K(F),XR(e)
    • S(a);N_GUARD::R(C),XR(c)
    • P(b);::P(G)
  • Tries
    • Try
      • R(L);CHECK,XB(f)
      • Refutation
        • P(h);XR(L)
  • Actual
    • K(F);P_SPINQ(E),S_FLIGHT
    • Threat
      • B(A)+K(F)
    • Vars
      • R(e);CHECK,XQ(E)::B(A)+K(F),XR(e)
      • P(b);CHECK,XB(B)::B(A)+K(F),XQ(b)
      • P(b);CHECK,XB(B)::B(A)+K(F),XS(b)
      • P(b);CHECK,XB(B)::B(A)+K(F),XR(b)
      • P(b);CHECK::B(A)+K(F),XQ(b)
      • P(b);CHECK::B(A)+K(F),XS(b)
      • P(b);CHECK::B(A)+K(F),XB(b)
      • P(b);CHECK::B(A)+K(F),XR(b)
      • R(c);N_SPINR(c),XR(C)::B(A)+K(F),XP(b)
      • R(e);N_PINQ(E),XP(I)::QAB(E)
      • R(e);N_SPINB(f)::QAR(E),XR(e)
      • S(a);N_GUARD::R(C),XR(c)
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