MESON Chess Problem Database

Problem Display
PID: 51686 (2R1Q1K1/1p6/1p1pN2R/1r1kP1p1/B2p2bP/b1pP1nB1/1r6/8 w - - 0 1)

Szwedowski, Leopold Mieczyslaw

The Problemist, 2004

(First published on Mon Mar 1 2004)

2R1Q1K1/1p6/1p1pN2R/1r1kP1p1/B2p2bP/b1pP1nB1/1r6/8

#2

10 + 12

SOLUTION

  • SOUND
  • Sets
    • 1...Bc5
      • 2.Sc7#
    • 1...Bxe6+
      • 2.Qxe6#
    • 1...gxh4
      • 2.Sf4#
  • Tries
    • 1.Rc4?
      • threat
        • 2.Sc7#
      • 1...Bxe6+
        • 2.Qxe6#
      • 1...Rc5!
    • 1.Rc5+?
      • 1...Bxc5
        • 2.Sc7#
      • 1...bxc5
        • 2.Sc7#
      • 1...dxc5
        • 2.Sc7#
        • 2.Qd7#
      • 1...Rxc5!
    • 1.Qxb5+?
      • 1...Bc5
        • 2.Sc7#
        • 2.Qc4#
      • 1...Rxb5!
    • 1.Qd7?
      • threat
        • 2.Qxb7#
      • 1...Bxe6+
        • 2.Qxe6#
      • 1...Rc5
        • 2.Qxd6#
      • 1...Sxe5!
    • 1.Qe7?
      • threat
        • 2.Qxb7#
      • 1...Bxe6+
        • 2.Qxe6#
      • 1...dxe5
        • 2.Sc7#
      • 1...Rc5
        • 2.Qxd6#
      • 1...Sxe5!
    • 1.hxg5?
      • threat
        • 2.Sf4#
      • 1...Bxe6+
        • 2.Qxe6#
      • 1...dxe5!
  • Keys
    • 1.Qf7!
      • threat
        • 2.Qxb7#
      • 1...Bxe6
        • 2.Qxe6#
      • 1...Sxe5
        • 2.Sf4#
      • 1...dxe5
        • 2.Sf4#
      • 1...Rc5
        • 2.Sc7#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 3
    • REMOVED MATES = 2
  • Sets
    • B(b);SBLOCK::S(F)
    • B(f);CHECK,OGATE,XS(F)::QAB1(I),XB(f)
    • P(i);N_GUARD,XP(D)::S(F)
  • Tries
    • Try
      • R(H);
      • Threat
        • S(F)
      • Vars
        • B(f);CHECK,OGATE,XS(F)::QAB1(I),XB(f)
      • Refutation
        • R(g);
    • Try
      • R(H);CHECK
      • Vars
        • B(b);SBLOCK,XR(H)::S(F)
        • P(j);SBLOCK,XR(H)::S(F)
      • Refutation
        • R(g);XR(H)
    • Try
      • Q(I);CHECK,XR(g)
      • Refutation
        • R(a);XQ(I)
    • Try
      • Q(I);P_PINP(k)
      • Threat
        • QAB(I),XP(l)
      • Vars
        • B(f);CHECK,OGATE,XS(F)::QAB1(I),XB(f)
        • R(g);S_CUTB(b)::QAR1(I),XP(k)
      • Refutation
        • S(d);XP(E)
    • Try
      • Q(I);
      • Threat
        • QAB(I),XP(l)
      • Vars
        • B(f);CHECK,OGATE,XS(F)::QAB1(I),XB(f)
        • P(k);XP(E)::S(F)
        • R(g);S_CUTB(b)::QAR1(I),XP(k)
      • Refutation
        • S(d);XP(E)
    • Try
      • P(D);XP(i)
      • Threat
        • S(F)
      • Vars
        • B(f);CHECK,OGATE,XS(F)::QAB1(I),XB(f)
      • Refutation
        • P(k);XP(E)
  • Actual
    • Q(I);
    • Threat
      • QAB(I),XP(l)
    • Vars
      • B(f);OGATE,P_PINQ(I),P_SPINB(f),XS(F)::QAB1(I),XB(f)
      • S(d);SBLOCK,XP(E)::QAB(I)+S(F),DCHECK
      • P(k);SBLOCK,XP(E)::QAB(I)+S(F),DCHECK
      • R(g);SBLOCK::QAB(I)+S(F),DCHECK
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