MESON Chess Problem Database

Problem Display
PID: 168286 (b1r5/1q3nN1/2BpPbQp/2Pr1p1K/2P2p2/1R1P1kp1/6p1/2N3B1 w - - 0 1)

Petite, Efren

Horizon, 2009

b1r5/1q3nN1/2BpPbQp/2Pr1p1K/2P2p2/1R1P1kp1/6p1/2N3B1

#2

11 + 13

6490 yacpdb 2018

SOLUTION

  • SOUND
  • Tries
    • 1.Sxf5?
      • threat
        • 2.Qg4#
      • 1...Bg5
        • 2.Sd4#
      • 1...Se5
        • 2.Sd4#
      • 1...Sg5
        • 2.Sh4#
      • 1...Rg8!
    • 1.d4+?
      • 1...Ke4
        • 2.Qxf5#
      • 1...Qxb3!
  • Keys
    • 1.Qxf5!
      • threat
        • 2.Qxd5#
      • 1...Qxc6
        • 2.d4#
      • 1...Be5
        • 2.Qe4#
        • 2.Qg4#
      • 1...Se5
        • 2.Qe4#
      • 1...Sg5
        • 2.Qg4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 0
  • Sets
  • Tries
    • Try
      • S(K);P_SPINS(K),XP(f)
      • Threat
        • QAB1(J)
      • Vars
        • B(h);N_PINS(K)::S(K)
        • S(k);N_PINS(K)::S(K)
      • Refutation
        • R(m);
    • Try
      • P(D);CHECK
      • Vars
        • K(b);P_SPINP(f),S_FLIGHT::QAB1(J),XP(f)
      • Refutation
        • Q(j);XR(C)
  • Actual
    • Q(J);P_PINP(d),P_SPINQ(J),XP(f)
    • Threat
      • QAB(J),XR(e)
    • Vars
      • Q(j);N_GUARD,N_SPINR(e),XB(H)::R(C)+P(D)
      • S(k);N_PINQ(J)::QAB1(J)
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