MESON Chess Problem Database

Problem Display
PID: 275412 (b7/4N3/2pQ4/4p3/2p1k1r1/4pRp1/prR3K1/BB3n2 w - - 0 1)

Sutter, Alfred Ernst

Die Tat, 1946

(First published on Sat Jan 12 1946)

b7/4N3/2pQ4/4p3/2p1k1r1/4pRp1/prR3K1/BB3n2

#2

7 + 11

6490 yacpdb 2024

SOLUTION

  • SOUND
  • Sets
    • 1...Rxb1
      • 2.Rxc4#
    • 1...Rxc2+
      • 2.Bxc2#
    • 1...Rb3
      • 2.Rxc4#
    • 1...Rb4
      • 2.Rxc4#
    • 1...Rb5
      • 2.Rxc4#
    • 1...Rb6
      • 2.Rxc4#
    • 1...Rb7
      • 2.Rxc4#
    • 1...Rb8
      • 2.Rxc4#
    • 1...Sd2
      • 2.Rxc4#
    • 1...e2
      • 2.Rxe2#
      • 2.Rxc4#
  • Tries
    • 1.Qc5?
      • threat
        • 2.Qxc4#
      • 1...Rxc2+
        • 2.Bxc2#
      • 1...Rb4
        • 2.Rxc4#
      • 1...Sd2
        • 2.Rxc4#
        • 2.Qxe3#
      • 1...c3
        • 2.Qc4#
      • 1...Kd3!
    • 1.Qd2?
      • threat
        • 2.Rxc4#
      • 1...Rxc2
        • 2.Bxc2#
        • 2.Qxc2#
      • 1...c3!
    • 1.Qe6?
      • threat
        • 2.Qxc4#
      • 1...Rxc2+
        • 2.Bxc2#
      • 1...Kd4
        • 2.Qxc4#
      • 1...c3
        • 2.Qc4#
      • 1...Rb4
        • 2.Rxc4#
        • 2.Qf5#
      • 1...Sd2
        • 2.Rxc4#
      • 1...Kd3!
  • Keys
    • 1.Qb4!
      • threat
        • 2.Qxc4#
      • 1...Rxc2+
        • 2.Bxc2#
      • 1...Kd3
        • 2.Rd2#
      • 1...Kd4
        • 2.Qxc4#
      • 1...Rxb4
        • 2.Rxc4#
      • 1...Sd2
        • 2.Rxc4#

FEATURES

  • Static
    • TYPE = THREAT
    • CHANGED MATES = 0
    • ADDED MATES = 2
    • REMOVED MATES = 6
  • Sets
    • R(c);N_PINR(C),XB(B)::R(C),XP(f)
    • R(c);CHECK,OGATE,P_SPINR(c),XR(C)::B(B),XR(c)
    • R(c);N_PINR(C)::B(B)+R(C),DCHECK,XP(f)
    • S(a);N_PINR(C)::B(B)+R(C),DCHECK,XP(f)
  • Tries
    • Try
      • Q(F);
      • Threat
        • QAR2(F),XP(f)
      • Vars
        • R(c);CHECK,OGATE,P_SPINR(c),XR(C)::B(B),XR(c)
        • R(c);N_PINR(C)::B(B)+R(C),DCHECK,XP(f)
        • P(f);::QAR2(F)
      • Refutation
        • K(g);P_SPINP(d),S_FLIGHT
    • Try
      • Q(F);N_SPINR(C)
      • Threat
        • B(B)+R(C),DCHECK,XP(f)
      • Refutation
        • P(f);
    • Try
      • Q(F);P_PINP(i)
      • Threat
        • QAR2(F),XP(f)
      • Vars
        • R(c);CHECK,OGATE,P_SPINR(c),XR(C)::B(B),XR(c)
        • K(g);N_SPINP(i),P-FLIGHT,P_SPINR(c)::QAR1(F),XP(f)
        • P(f);::QAR2(F)
        • S(a);N_PINR(C)::B(B)+R(C),DCHECK,XP(f)
      • Refutation
        • K(g);N_SPINP(i),P_SPINP(d),S_FLIGHT
  • Actual
    • Q(F);P_PINP(f)
    • Threat
      • QAR2(F),XP(f)
    • Vars
      • R(c);CHECK,OGATE,P_SPINR(c),XR(C)::B(B),XR(c)
      • K(g);N_SPINP(f),P_SPINP(d),S_FLIGHT::B(B)+R(C),DCHECK
      • K(g);P-FLIGHT,P_SPINR(c)::QAR1(F),XP(f)
      • R(c);N_PINR(C),N_SPINP(f),XQ(F)::B(B)+R(C),DCHECK,XP(f)
      • S(a);N_PINR(C)::B(B)+R(C),DCHECK,XP(f)
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