MESON Chess Problem Database

Problem Display
PID: 54378 (8/3p1Q2/3B4/2P2N2/3Nk2p/6r1/2P5/1B1K2n1 w - - 0 1)

Morse, Christopher Jeremy

StrateGems, 2004

8/3p1Q2/3B4/2P2N2/3Nk2p/6r1/2P5/1B1K2n1

#2

8 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Ra3
      • 2.c3#
    • 1...Rb3
      • 2.cxb3#
    • 1...Rd3+
      • 2.cxd3#
    • 1...Rg4
      • 2.c3#
      • 2.c4#
    • 1...Rg5
      • 2.c3#
      • 2.c4#
    • 1...Rg6
      • 2.c3#
      • 2.c4#
    • 1...Rg7
      • 2.c3#
      • 2.c4#
    • 1...Rg8
      • 2.c3#
      • 2.c4#
    • 1...Sf3
      • 2.c3#
      • 2.c4#
  • Tries
    • 1.Qa2?
      • threat
        • 2.Qa8#
      • 1...Rd3+
        • 2.cxd3#
      • 1...Ra3
        • 2.c3#
      • 1...Rg8
        • 2.c3#
        • 2.c4#
      • 1...Rb3!
    • 1.Qb3?
      • threat
        • 2.Qb7#
      • 1...Rd3+
        • 2.cxd3#
      • 1...Rxb3!
    • 1.Qxd7?
      • threat
        • 2.Qc6#
        • 2.Qe6#
        • 2.Qb7#
      • 1...Kd5
        • 2.Qe6#
      • 1...Rb3
        • 2.Qc6#
        • 2.Qe6#
      • 1...Rg6
        • 2.Qc6#
        • 2.Qb7#
        • 2.c4#
      • 1...Rg7
        • 2.Qc6#
        • 2.Qe6#
        • 2.c4#
      • 1...Sf3
        • 2.Qc6#
        • 2.Qb7#
        • 2.c4#
      • 1...Rd3+!
  • Keys
    • 1.Qg8!
      • threat
        • 2.Qa8#
      • 1...Rd3+
        • 2.cxd3#
      • 1...Rxg8
        • 2.c4#
      • 1...Ra3
        • 2.c3#
      • 1...Rb3
        • 2.cxb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 1
    • REMOVED MATES = 0
  • Sets
    • R(b);N_GUARD::B(A)+P(C)
    • R(b);OGATE::B(A)+P(C),XR(b)
    • R(b);CHECK,OGATE::P(C),XR(b)
  • Tries
    • Try
      • Q(H);
      • Threat
        • QAB(H)
      • Vars
        • R(b);CHECK,OGATE::P(C),XR(b)
        • R(b);N_GUARD::B(A)+P(C)
      • Refutation
        • R(b);
    • Try
      • Q(H);
      • Threat
        • QAB(H)
      • Vars
        • R(b);CHECK,OGATE::P(C),XR(b)
      • Refutation
        • R(b);XQ(H)
    • Try
      • Q(H);XP(e)
      • Threat
        • DUALS(3)
      • Vars
        • K(c);S_FLIGHT::QAB1(H)
      • Refutation
        • R(b);CHECK
  • Actual
    • Q(H);
    • Threat
      • QAB(H)
    • Vars
      • R(b);CHECK,OGATE::P(C),XR(b)
      • R(b);N_GUARD,XQ(H)::B(A)+P(C)
      • R(b);N_GUARD::B(A)+P(C)
      • R(b);OGATE::B(A)+P(C),XR(b)
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