MESON Chess Problem Database

Problem Display
PID: 174722 (K6B/7B/8/1p6/bQ6/1n6/rP5R/kNN4R w - - 0 1)

Reddmann, Hauke

Die Schwalbe, 2017

K6B/7B/8/1p6/bQ6/1n6/rP5R/kNN4R

#2

9 + 5

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb2
      • 2.Bxb2#
      • 2.Qa3#
    • 1...Ra3
      • 2.Qxa3#
  • Tries
    • 1.Sd2?
      • threat
        • 2.Scxb3#
      • 1...Rxb2
        • 2.Qa3#
      • 1...Sxc1
        • 2.Rxc1#
      • 1...Sxd2
        • 2.Sb3#
      • 1...Ra3
        • 2.Qxa3#
      • 1...Sa5
        • 2.Scb3#
      • 1...Sc5
        • 2.Scb3#
      • 1...Sd4!
    • 1.Sc3?
      • threat
        • 2.Sxb3#
      • 1...Sxc1
        • 2.Rxc1#
      • 1...Sd4
        • 2.Sb3#
      • 1...Sa5
        • 2.Sb3#
      • 1...Sc5
        • 2.Sb3#
      • 1...Sd2!
    • 1.Qa3?
      • threat
        • 2.Qxa2#
      • 1...Sxc1
        • 2.b3#
        • 2.b4#
      • 1...Rxa3!
    • 1.Qxb3?
      • threat
        • 2.Qxa2#
      • 1...Rxb2
        • 2.Bxb2#
        • 2.Qa2#
        • 2.Qxb2#
        • 2.Qa3#
      • 1...Ra3
        • 2.Qxa3#
        • 2.bxa3#
      • 1...Bxb3+!
  • Keys
    • 1.Sa3!
      • threat
        • 2.Sxb3#
      • 1...Rxb2
        • 2.Bxb2#
      • 1...Rxa3
        • 2.Qxa3#
      • 1...Sxc1
        • 2.Rxc1#
      • 1...Sd2
        • 2.Sb3#
      • 1...Sd4
        • 2.Sb3#
      • 1...Sa5
        • 2.Sb3#
      • 1...Sc5
        • 2.Sb3#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 6
    • REMOVED MATES = 0
  • Sets
    • R(b);OGATEB::QAR2(F),XR(b)
  • Tries
    • Try
      • S(A);
      • Threat
        • R(C)+S(B),DCHECK,XS(c)
      • Vars
        • R(b);OGATEB,P_SPINR(b),XP(D)::QAR2(F)
        • S(c);OGATE,P_SPINS(c),XS(B)::R(C),XS(c)
        • S(c);XS(A)::R(C)+S(B),DCHECK
        • R(b);OGATEB::QAR2(F),XR(b)
        • S(c);::R(C)+S(B),DCHECK
      • Refutation
        • S(c);
    • Try
      • S(A);
      • Threat
        • R(C)+S(B),DCHECK,XS(c)
      • Vars
        • S(c);OGATE,P_SPINS(c),XS(B)::R(C),XS(c)
        • S(c);::R(C)+S(B),DCHECK
      • Refutation
        • S(c);
    • Try
      • Q(F);P_PINR(b)
      • Threat
        • QAR1(F),XR(b)
      • Refutation
        • R(b);N_SPINR(b),XQ(F)
    • Try
      • Q(F);XS(c)
      • Threat
        • QAR1(F),XR(b)
      • Refutation
        • B(d);CHECK,XQ(F)
  • Actual
    • S(A);
    • Threat
      • R(C)+S(B),DCHECK,XS(c)
    • Vars
      • R(b);OGATE,P_SPINR(b),XP(D)::B(I),XR(b)
      • R(b);OGATE,XS(A)::QAR2(F),XR(b)
      • S(c);OGATE,P_SPINS(c),XS(B)::R(C),XS(c)
      • S(c);::R(C)+S(B),DCHECK
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