MESON Chess Problem Database

Problem Display
PID: 99042 (Q1n1KR2/3p4/1bqp4/3R4/2PNk3/7p/3PP1rP/5bnB w - - 0 1)

Bennett, J

Magyar Sakkelet, 1952

Q1n1KR2/3p4/1bqp4/3R4/2PNk3/7p/3PP1rP/5bnB

#2

10 + 10

6490 yacpdb 2009

SOLUTION

  • SOUND
  • Sets
    • 1...Qxd5
      • 2.Qxd5#
  • Tries
    • 1.Se6?
      • threat
        • 2.Sg5#
        • 2.Rf4#
      • 1...Qxd5
        • 2.Qxd5#
      • 1...Sxe2
        • 2.Sg5#
      • 1...Be3
        • 2.d3#
      • 1...Bd8
        • 2.Rf4#
      • 1...Sf3
        • 2.Rf4#
        • 2.exf3#
      • 1...dxe6+!
    • 1.Qa3?
      • threat
        • 2.Qd3#
        • 2.Qe3#
      • 1...Qxd5
        • 2.Qe3#
      • 1...Bxe2
        • 2.Qe3#
      • 1...Bxd4
        • 2.Qd3#
      • 1...Sxe2
        • 2.Qe3#
        • 2.Qf3#
      • 1...Qxc4!
  • Keys
    • 1.Sf3!
      • threat
        • 2.Sg5#
      • 1...Qxd5
        • 2.Qxd5#
      • 1...Sxf3
        • 2.exf3#
      • 1...Rg5
        • 2.Sxg5#
      • 1...Be3
        • 2.d3#
      • 1...Bd8
        • 2.Rd4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 4
    • REMOVED MATES = 0
  • Sets
    • Q(g);OGATE,P_SPINQ(g),XR(G)::QAB1(H),XQ(g)
  • Tries
    • Try
      • S(F);
      • Threat
        • DUALS(2)
      • Vars
        • Q(g);OGATE,P_SPINQ(g),XR(G)::QAB1(H),XQ(g)
        • S(b);XP(C)::S(F)
        • B(f);SBLOCK::P(B)
        • B(f);::R1(J)
      • Refutation
        • P(i);CHECK,XS(F)
    • Try
      • Q(H);
      • Threat
        • DUALS(2)
      • Vars
        • Q(g);XR(G)::QAR1(H)
        • B(a);XP(C)::QAR1(H)
        • B(f);XS(F)::QAB1(H)
      • Refutation
        • Q(g);XP(E)
  • Actual
    • S(F);N_PINR(c)
    • Threat
      • S(F)
    • Vars
      • Q(g);OGATE,P_SPINQ(g),XR(G)::QAB1(H),XQ(g)
      • S(b);OGATE,XS(F)::P(C),XS(b)
      • R(c);::B(A)+S(F),DCHECK,XR(c)
      • B(f);SBLOCK::P(B)
      • B(f);N_GUARD::R1(G)
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